GRE Reading Comprehension: Supporting Detail Questions

Supporting Detail questions are among the most straightforward on the GRE Verbal section — the answer is always directly stated in the passage. Yet they remain a frequent source of errors because test-makers design wrong answers that borrow passage vocabulary while subtly changing the meaning. Below you will learn what these questions look like, master a seven-step strategy for answering them, walk through a detailed example step by step, and then practice with five guided questions drawn from realistic GRE-style passages covering science, history, and the humanities.

What Are Supporting Detail Questions?

Supporting Detail questions ask you to identify what the passage explicitly states about a specific topic. Unlike Inference questions (which require you to read between the lines) or Main Idea questions (which ask about the passage as a whole), Supporting Detail questions direct you to locate a particular piece of information that is directly expressed in the passage text.

The correct answer is always a paraphrase of something the passage says — it restates the passage's information using different vocabulary or sentence structure while preserving the original meaning. You will almost never see the passage's exact words repeated verbatim in the correct answer. In fact, exact passage wording in an answer choice is sometimes a deliberate trap.

Key principle: The answer to a Supporting Detail question is always in the passage. If you find yourself reasoning through multiple logical steps to justify a choice, you are probably inferring rather than locating a stated detail.

These questions appear in two response formats on the GRE:

Select One Answer (5 choices, A-E)

Choose the single best answer. This is the most common format. The correct answer paraphrases a specific passage detail.

Select One or More Answers (3 choices, A-C)

Every choice you select must be independently correct. There is no partial credit — you must identify all correct choices and only the correct choices to earn the point.

How Wrong Answers Are Built

Understanding how test-makers construct wrong answers is one of the most powerful skills you can develop for Supporting Detail questions. Nearly every incorrect choice falls into one of six predictable trap categories.

Trap Type	How It Works
Distortion	Takes something the passage says and changes the degree, direction, or scope. The passage says effects were 'similar'; the trap says one was 'significantly more beneficial.'
Right topic, wrong detail	Mentions something from the passage but attributes it to the wrong subject or context. The passage discusses Io's geological activity; the trap attributes that activity to Europa instead.
Outside information	Introduces a claim the passage never makes, even if it sounds reasonable. The passage discusses employment trends but the trap mentions 'job satisfaction,' which is never addressed.
Passage words, changed meaning	Uses the same vocabulary as the passage but rearranges the meaning. The passage says most wealthy 'were not self-made'; the trap says 'most accumulated their own fortunes.'
Too extreme	Makes a claim stronger than what the passage supports. The passage says something 'could conceivably' happen; the trap says it 'has been shown to' happen.
Reversed logic	States the opposite of what the passage says. The passage says a proportion decreased; the trap says it increased.

Watch for EXCEPT questions: Some Supporting Detail questions use an EXCEPT format: "According to the passage, all of the following were true EXCEPT:". In these questions, four answer choices are stated in the passage, and the correct answer is the one that is not stated or that contradicts the passage.

The Seven-Step Strategy

These seven steps apply to every Supporting Detail question you will encounter on the GRE. Follow them in order to maximize accuracy and minimize time spent.

Before looking at the passage or answer choices, pinpoint the specific subject of the question. Supporting Detail questions always target a particular topic, person, experiment, time period, or concept. For example: "According to the passage, which of the following is true of the cryptochrome proteins found in migratory birds?" — you need information specifically about cryptochrome proteins, not about bird migration in general.

Go back to the passage and find where the targeted topic is discussed. On the GRE, passages are short enough that you can scan for the relevant proper nouns, technical terms, or concepts. Do not rely on your memory of the passage — always re-read the relevant section.

Read the relevant sentences (and usually the sentence before and after for context) carefully. Form your own understanding of what the passage says before you look at the answer choices. This prevents you from being swayed by plausible-sounding wrong answers.

Go through the choices and find the one that restates the passage's information. Remember: the correct answer will use different words but convey the same meaning. When the passage uses technical language, the correct answer often translates it into plain language.

This is one of the most common traps. A wrong answer might borrow vocabulary directly from the passage but rearrange or reframe the information in a way that distorts its meaning. Always check that the relationship between ideas in the answer choice matches the relationship in the passage.

In "Select All That Apply" format, each answer choice must be independently confirmed against the passage. A choice is only correct if the passage explicitly supports it on its own. Do not assume that because two choices seem related, they must both be correct (or both incorrect). Treat each choice as a separate true/false question.

For EXCEPT questions, systematically verify each answer choice. Mark the ones that are confirmed by the passage. The one that cannot be confirmed — or that contradicts the passage — is the correct answer. Circle or mentally flag the word "EXCEPT" and remember: four choices are true, one is false.

Pro tip: When the passage uses technical language (for example, "faunal richness and abundance"), the correct answer often translates it into everyday language ("wider varieties of animals"). Look for the answer that rephrases the passage's meaning, not the one that borrows its vocabulary.

Worked Example: Scientific Detail Retrieval

Work through each step below to see how the seven-step strategy applies to a real Supporting Detail question about plant biology. You must answer each mini-challenge correctly to unlock the next step.

Interactive Walkthrough0/6 steps

Locating a Supporting Detail in a Science Passage

Passage: When herbivorous insects damage the leaves of certain plant species, the wounded tissue releases a complex mixture of volatile organic compounds — including terpenoids, green leaf volatiles, and methyl jasmonate — into the surrounding air. Neighboring plants that detect these airborne signals respond by upregulating the production of defensive chemicals such as protease inhibitors and phenolic compounds, which reduce the nutritional quality of their leaves and deter further herbivory. This phenomenon, first documented in the early 1980s in studies of willow and alder trees, was initially met with skepticism because it appeared to require a form of interplant communication that lacked a plausible evolutionary mechanism: natural selection, critics argued, should not favor a plant that "warns" unrelated competitors at its own metabolic cost. Subsequent research has reframed the phenomenon as primarily an intra-plant signaling process — the volatiles serve to coordinate defense among a single plant's own undamaged leaves — with the interplant effect being an incidental consequence that neighboring plants have evolved to exploit.

According to the passage, the initial skepticism toward plant volatile signaling was based on which of the following concerns?

There was no plausible evolutionary explanation for why a plant would emit signals that benefit competing plants at a cost to itself

Laboratory experiments had failed to detect any volatile organic compounds released by damaged plant tissue

Evolutionary biologists had already established that interspecies chemical communication is biologically impossible

The chemical compounds released were present in concentrations too low to trigger a defensive response in neighboring plants

The phenomenon appeared to contradict well-documented evidence that plants lack any form of chemical signaling capacity

Step 1: Identify the target of the question

What specific topic does the question ask about?

Step 2: Locate the relevant sentence

Step 3: Understand the passage's stated reason

Step 4: Match the paraphrase

Step 5: Eliminate the traps

Step 6: Select the correct answer

Common Question Stems to Recognize

Supporting Detail questions use several predictable stem patterns. Recognizing these patterns instantly tells you that the answer must be directly stated in the passage.

Stem Pattern	Example
"According to the passage..."	According to the passage, which of the following is true of X?
"The passage states..."	The passage states that X led to which of the following?
"Supported by the passage"	Which of the following statements about X is most clearly supported by the passage?
"The author indicates..."	The author of the passage indicates which of the following about X?
"The passage mentions..."	The passage mentions which of the following as being a characteristic of X?
"The passage emphasizes..."	The passage above emphasizes which of the following points about X?
"All of the following EXCEPT"	According to the passage, all of the following were true EXCEPT:

Overlap alert: Some stems like "The passage suggests..." can signal either a Supporting Detail or an Inference question. The key distinction is whether the answer is directly stated in the passage (Supporting Detail) or requires a logical step beyond the text (Inference). Check the answer choices — if one is a clear paraphrase of passage text, it is likely a Supporting Detail question.

Practice Questions

Now apply what you learned. Each question includes the full passage text. After you submit your answer, click through the solution walkthrough one step at a time to compare against your own reasoning.

Question 1 — Scientific Detail (Biology)

Passage: Ornithologists have long known that migratory birds can detect Earth's magnetic field, but the biophysical mechanism underlying this ability has remained elusive. The leading hypothesis now centers on cryptochrome proteins in the birds' retinal cells. These light-sensitive molecules, activated by blue light, generate radical pairs — transient molecular species whose quantum-mechanical spin states are sensitive to the orientation of Earth's magnetic field. Behavioral experiments with European robins have demonstrated that the birds' magnetic orientation is light-dependent and can be disrupted by radiofrequency electromagnetic fields at intensities too low to affect any classical magnetoreceptor — a finding consistent with a quantum-mechanical, radical-pair mechanism but difficult to reconcile with earlier hypotheses invoking magnetite-based systems. The cryptochrome compass appears to function as an inclination compass, detecting the angle of magnetic field lines relative to gravity rather than their polarity, which explains why birds tested in experimentally reversed magnetic fields reorient in a manner consistent with following field-line inclination rather than north-south polarity.

According to the passage, which of the following is true of the cryptochrome proteins found in migratory birds?

Question 2 — Scientific Detail (Planetary Science)

Passage: High-pressure physics experiments have revealed that water subjected to pressures exceeding one million atmospheres and temperatures above two thousand kelvins enters a phase known as superionic ice, in which oxygen atoms lock into a rigid crystalline lattice while hydrogen atoms — stripped of their electrons — flow freely through the lattice like a liquid. This exotic state of matter, long predicted by computational simulations but only recently confirmed experimentally using laser-driven shock compression, has profound implications for planetary science. The interiors of Uranus and Neptune, classified as "ice giants" because their bulk composition is dominated by water, ammonia, and methane, reach the pressure-temperature conditions required for superionic ice formation. Because the mobile protons in superionic ice carry electrical charge, a substantial layer of this material would be electrically conductive — a property that could generate the dynamo currents responsible for the anomalous, non-dipolar magnetic fields observed by Voyager 2 during its flybys of Uranus and Neptune. Standard models invoking convective metallic hydrogen, which successfully explain the magnetic fields of Jupiter and Saturn, cannot account for the tilted, off-center magnetic geometries of the ice giants.

According to the passage, the discovery of high-pressure ice phases in Uranus and Neptune is significant primarily because it

Question 3 — Scientific Detail (Marine Biology)

Passage: On a handful of nights each year, typically following a full moon in late spring, hundreds of coral species across vast stretches of reef simultaneously release their gametes — eggs and sperm — into the water column in one of nature's most spectacular synchronized events. This mass spawning, first documented on Australia's Great Barrier Reef in 1981, depends on an intricate alignment of environmental cues. Seawater temperature must exceed a species-specific threshold, day length must fall within a narrow seasonal window, and the lunar cycle provides the final timing signal, with most species spawning between two and six nights after the full moon. The adaptive logic of synchronization is straightforward: by releasing gametes simultaneously, corals overwhelm the capacity of planktivorous fish and invertebrates to consume the spawn, thereby maximizing the proportion of eggs that survive to be fertilized. Recent research, however, has raised concerns that rising ocean temperatures may decouple the relationship between temperature thresholds and lunar timing, potentially causing different species to spawn on different nights and undermining the predator-satiation advantage that synchrony provides.

According to the passage, the primary adaptive advantage of synchronized mass spawning in corals is that it

Question 4 — Scientific Detail (Genetics)

Passage: For decades, transposable elements — segments of DNA capable of copying themselves and inserting into new genomic locations — were dismissed as 'junk DNA,' genomic parasites that persisted solely through their ability to replicate. This characterization, however, has undergone significant revision. Recent research has revealed that a substantial proportion of the regulatory sequences governing mammalian gene expression derive from domesticated transposable elements, a process termed 'exaptation.' In the human genome alone, an estimated 25 percent of promoter regions — the stretches of DNA where transcription is initiated — contain sequences traceable to ancient transposable element insertions. The mechanism by which these selfish genetic elements become integrated into the host's regulatory architecture is now better understood, though several aspects remain contentious. When a transposable element inserts near a gene, it may introduce novel transcription factor binding sites. If the binding site happens to confer a regulatory advantage — for instance, by enabling the gene to respond to a new environmental signal — natural selection can fix the insertion in the population. Over evolutionary timescales, mutations accumulate in the transposable element, rendering it incapable of further transposition while preserving its regulatory function. The element, once a genomic parasite, becomes an indispensable component of the host's gene regulatory network.

According to the passage, which of the following is true of transposable elements that have undergone exaptation?

Question 5 — Humanities Detail (Literary History)

Passage: The systematic study of Old English literature in nineteenth-century Britain was never a purely scholarly enterprise. When pioneering philologists such as John Mitchell Kemble and Benjamin Thorpe began publishing editions and translations of Anglo-Saxon texts in the 1830s and 1840s, they did so within an intellectual climate that increasingly valued the construction of national origin narratives. Sharon Turner's influential 'History of the Anglo-Saxons,' first published in 1799, epitomizes this tendency. Turner presented the Anglo-Saxon period as the seedbed of English liberty, drawing parallels between the witenagemot, the advisory council of Anglo-Saxon kings, and the modern Parliament. His reading required a selective emphasis on those texts and institutions that could be made to prefigure democratic governance, while downplaying evidence of autocratic kingship, rigid social hierarchy, and widespread unfreedom. Not all Victorian scholars, however, embraced this instrumentalization of the Anglo-Saxon past. Frederick Furnivall, founder of the Early English Text Society in 1864, advocated a more empirical approach that prioritized the publication of texts in their original forms, resisting the temptation to press them into the service of contemporary political arguments.

According to the passage, the Early English Text Society was founded with the goal of

Common Mistakes to Avoid

Mistake 1 — Answering from memory instead of re-reading. Always go back and confirm the detail in the passage text. Your memory of a passage read under time pressure is unreliable. The 30 seconds spent re-reading prevents 2 minutes of agonizing over two plausible-sounding choices.

Mistake 2 — Confusing Supporting Detail with Inference. If the question says "According to the passage" or "The passage states," the answer must be directly stated. If you find yourself reasoning through multiple logical steps to justify an answer, you may be inferring rather than locating a stated detail.

Mistake 3 — Falling for "sounds right" answers. A choice can sound perfectly reasonable and still be wrong because the passage simply does not say it. If the passage does not state it, it cannot be the answer to a Supporting Detail question — no matter how logical it seems.

Mistake 4 — Ignoring the scope of the question. If the question asks about what happened "in Posey's experiment," do not select an answer about general properties of exotic species — even if the passage discusses both. Match the answer to the specific scope of the question.

Mistake 5 — Misreading EXCEPT questions. In an EXCEPT question, you are looking for the choice the passage does NOT support. It is easy to accidentally select a choice that IS supported by the passage. Mentally flag the word "EXCEPT" and remember: four choices are true, one is false.

Mistake 6 — On Select One or More, stopping too early. Do not stop after finding one correct choice. Check every choice against the passage. Missing even one correct answer means zero credit — there is no partial scoring.

Supporting Detail vs. Inference

The closest sibling of the Supporting Detail question is the Inference question. Both ask about passage content, but they differ in a fundamental way. Use this table to distinguish them at a glance.

Feature	Supporting Detail	Inference
Where the answer lives	Directly stated in the passage	Requires a logical step beyond the text
Typical stems	"According to the passage..." / "The passage states..."	"It can be inferred..." / "The passage implies..."
Correct answer is...	A paraphrase of explicit passage text	A conclusion drawn from passage evidence
Number of reasoning steps	Zero — locate and match	One or two — connect ideas or draw a conclusion
Common wrong answers	Distortions, outside information, reversed logic	Overstatements, unwarranted leaps, tangential conclusions
Self-check question	"Can I point to the sentence that says this?"	"Is this a reasonable conclusion from what the passage says?"

When you encounter an ambiguous stem like "The passage suggests...," check whether the answer is directly stated. If you can point to the exact sentence in the passage that says it, treat it as a Supporting Detail question and apply the seven-step strategy. If the answer requires combining information from different parts of the passage or drawing a conclusion, it is an Inference question.

Study Checklist

Supporting Detail Mastery Checklist0/8 complete

Frequently Asked Questions

What is a Supporting Detail question on the GRE?

A Supporting Detail question asks you to identify what the passage explicitly states about a specific topic. The answer is directly stated in the passage text, not implied or inferred. These questions typically begin with stems like "According to the passage..." or "The passage states..." and the correct answer will be a paraphrase of passage language rather than an exact quotation.

How do Supporting Detail questions differ from Inference questions on the GRE?

Supporting Detail answers are directly stated in the passage, while Inference answers require a logical step beyond the text. If you find yourself reasoning through multiple steps to justify an answer, you are likely dealing with an Inference question rather than a Supporting Detail question. Both may use similar stems, but the key distinction is whether the answer is explicitly present in the passage.

What is the most common trap in GRE Supporting Detail questions?

The most common trap is a wrong answer that uses the same vocabulary as the passage but rearranges or reframes the meaning. For example, if the passage says effects were "similar," a trap answer might say one was "significantly more beneficial" than the other. Always verify that the relationship between ideas in the answer choice matches the relationship in the passage.

How should I approach EXCEPT-format Supporting Detail questions?

In EXCEPT questions, four answer choices are stated in the passage, and the correct answer is the one that is not stated or that contradicts the passage. Systematically verify each choice against the passage text. Mark the ones that are confirmed, and the one that cannot be confirmed or that contradicts the passage is your answer. Always mentally flag the word "EXCEPT" to avoid accidentally selecting a supported choice.

How do I handle Select One or More Supporting Detail questions?

For Select One or More questions, you must check every choice independently against the passage. Each choice is a standalone true/false question. There is no partial credit — you must select all correct choices and only the correct choices to earn the point. Do not assume that because two choices seem related, they must both be correct or both incorrect.