Critical Reasoning makes up roughly half of the GMAT Verbal section — about 9 of 23 questions — making it one of the highest-impact areas to master. Knowing the different GMAT critical reasoning question types and the specific strategy for each one is the fastest path to improving your Verbal score.
The GMAT Verbal section gives you 45 minutes for 23 questions, split between Critical Reasoning and Reading Comprehension. About 9 of those questions are CR, making it nearly half your Verbal score. CR passages are short — typically under 100 words — but the reasoning required to answer them correctly is where most students struggle.
GMAT CR questions fall into four broad skill categories: Analysis (breaking down argument structure), Construction (building or completing arguments), Critique (strengthening or weakening arguments), and Plan (evaluating plans and proposals). Understanding which category a question falls into helps you apply the right approach before you even look at the answer choices.
Every CR argument has three components: premises (the stated evidence), an assumption (the unstated link), and a conclusion (the claim being made). The formula is simple: Premise + Assumption = Conclusion. Most CR question types — strengthen, weaken, and assumption — all target the assumption, which makes identifying it the single most important CR skill.
Conclusion keywords to watch for include: therefore, thus, hence, consequently, it follows that, this suggests, the evidence indicates. The conclusion does not always appear at the end of the passage — it can be the first sentence or buried in the middle.
When reading a CR passage, your goal is to separate the evidence from the conclusion and then identify the logical gap between them. That gap is the assumption. Practice this decomposition on every CR question you encounter, and it will become second nature within a few weeks.
Argument: A company's sales increased 20% after it launched a new advertising campaign. The marketing director concludes that the advertising campaign caused the sales increase.
This single argument can be attacked from both strengthen and weaken angles — the key is always finding the unstated assumption that bridges premise to conclusion.
| Question Type | Frequency | What It Tests | Key Strategy |
|---|---|---|---|
| Strengthen | ~30% | Can you find support for the conclusion? | Identify the assumption, then find what reinforces it |
| Weaken | ~20% | Can you find a flaw in the argument? | Identify the assumption, then find what undercuts it |
| Assumption | ~10% | Can you spot the unstated premise? | Use the negation test: if negating it destroys the argument, it's the assumption |
| Inference | ~8% | Can you draw a valid conclusion from facts? | Stay close to the text — the answer must be directly supported |
| Boldface | ~10% | Can you identify the role of each statement? | Classify each bolded part as conclusion, premise, counter-evidence, or background |
| Evaluate | ~10% | What info would help assess the argument? | Find the question whose answer would strengthen OR weaken the argument |
| Paradox | ~7% | Can you explain a surprising result? | Find the answer that resolves the apparent contradiction |
| Complete the Argument | ~5% | Can you finish the logical chain? | The correct answer logically follows from the premises given |
The most common CR type asks you to find a fact that makes the conclusion more likely. The approach: identify the assumption, then look for an answer choice that reinforces it. Strong answers often eliminate alternative explanations, provide confirming evidence, or show that a necessary condition is met. A correct strengthen answer does not need to prove the conclusion — it just adds weight.
Weaken questions are the mirror image of strengthen: find a fact that makes the conclusion less likely. Identify the assumption and look for an answer that undercuts it. Common weaken patterns include providing an alternative explanation, showing a flaw in the causal link, or introducing a relevant counter-example. A weaken answer does not need to destroy the argument — just reduce its force.
These questions ask you to find the unstated premise the argument depends on. Use the negation test: if negating a potential answer choice makes the argument fall apart, that choice is the correct assumption. Be careful to distinguish between necessary assumptions (what the argument requires) and sufficient assumptions (what would guarantee the conclusion).
Unlike the other types, inference questions give you facts and ask what must be true based on them. There is no argument to evaluate — just information to process. The correct answer is always directly supported by the passage. Avoid answers that go beyond what the facts state, even if they seem reasonable.
Argument: City officials claim that the new bike lane network has reduced traffic congestion, citing a 15% decrease in average commute times since the lanes were installed.
Notice how both answers target the same assumption (causation) from opposite directions.
| Question Type | Look For These Phrases |
|---|---|
| Strengthen | "Which of the following, if true, most strengthens..." or "...most supports the conclusion" |
| Weaken | "Which of the following, if true, most seriously weakens..." or "...casts the most doubt" |
| Assumption | "The argument depends on which of the following assumptions?" or "...relies on the assumption that" |
| Inference | "Which of the following can be properly inferred?" or "...must be true" |
| Boldface | "The portions in boldface play which of the following roles?" |
| Evaluate | "The answer to which of the following would be most useful to evaluate?" |
| Paradox | "Which of the following, if true, most helps to explain..." or "...resolve the discrepancy" |
Boldface questions present an argument with one or two statements in bold, then ask you to identify the role each bolded statement plays: Is it the main conclusion? A supporting premise? A counter-argument? Background information? These are pure structure questions — you do not need to evaluate whether the argument is strong or weak, only classify the parts.
Evaluate questions ask which additional piece of information would help you assess the argument. The correct answer is one whose "yes" response would strengthen the argument and whose "no" response would weaken it. Paradox questions present two seemingly contradictory facts and ask you to explain how both can be true simultaneously. The correct answer provides a mechanism that resolves the apparent contradiction.
These questions end the passage with an incomplete sentence and ask you to finish it. The correct answer logically follows from the premises stated above it. These are uncommon (about 5% of CR) but straightforward once you recognize the pattern — treat them like an inference drawn from the argument's own logic.
The single most common CR mistake is selecting a strengthen answer on a weaken question, or vice versa. Under time pressure, students often correctly identify the assumption but then choose an answer that has the opposite effect from what the question asks. The fix is simple but essential: re-read the question stem before finalizing your answer choice.
An out-of-scope answer discusses a topic related to the passage but does not actually affect the conclusion. The test is straightforward: does this answer make the conclusion more or less likely? If it does neither, it is out of scope regardless of how relevant it seems. Answers requiring multiple additional assumptions to connect back to the argument are also likely out of scope.
Before you look at any answer choices, follow this three-step sequence: Read the question stem first to know what type you are dealing with. Analyze the passage to identify the conclusion, premise, and assumption. Predict what a correct answer would do (strengthen the assumption, weaken it, identify it, etc.). This pre-thinking approach prevents you from being swayed by attractive-sounding but incorrect choices.
Budget approximately 1.5 to 2 minutes per CR question. With 45 minutes total for 23 Verbal questions, you need to be efficient. Spend the first 30-40 seconds reading and analyzing the argument, 10 seconds pre-thinking, and the remaining time evaluating choices. If you are down to two options, pick the one that more directly addresses the assumption and move on — do not agonize.
Test your understanding with these GMAT-style Critical Reasoning questions: