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Main idea and summary: reading practice set 4

Separate the subject from the author’s point about it. Choose a summary that covers the whole passage without adding a new claim. This set contains 12 original Paragraph Comprehension exercises.

Test Ninjas Research · Updated September 29, 2026

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What you will learn

  • State the subject and the author’s point in one sentence.
  • Distinguish an important detail from the main idea.

A method you can repeat

  1. Ask what the passage is mostly about: this gives you the subject.
  2. Ask what the author explains about that subject: this gives you the point.
  3. Check your summary against every sentence. Reject answers that are too narrow, too broad, or unsupported.

Worked example: follow the evidence

Read: The repair shop placed outline labels above its tool racks. Workers could now see where each tool belonged, and new employees needed less help finding equipment. At closing time, empty outlines also made missing tools easy to spot.

Which statement best expresses the main idea?

Supported answer: Outline labels help workers locate, return, and account for tools.

Why it fits: Finding equipment and spotting missing tools are both benefits of the same labeling system. A useful summary must cover both.

Tempting wrong answer: New employees need help finding equipment.

Why it fails: This is connected to one sentence, but it leaves out returning tools and spotting missing ones. A related detail is not necessarily the main idea.

Before each answer: Before choosing, say: “This passage is about ___, and its main point is ___.”

Main idea and summary questions and explanations

Work through one question at a time. Explain your approach, check the worked answer, then move on. Use scratch paper for calculations.

0 of 12 checked · 0 correct.

Progress is saved in this browser. These original study questions do not produce an official AFQT score.

Question 1: Main idea

Question 1 · Main idea · medium

For three mornings, I tried to write the first sentence of my account of the ferry crossing. Nothing seemed to lead naturally into the trip. On the fourth morning, I began with the conversation I remembered most clearly, though it occurred halfway across. Other scenes followed. Once they were on the page, I could see which detail the reader would need before meeting the speakers. The opening sentence then came from a sound on the dock that I had barely noticed in my early attempts. It appeared first in the finished account but was among the last lines I wrote.

What is the main idea of the passage?

Choose an answer for question 1
Worked answer and explanation

Answer: C. Writing later parts of an account can help a writer discover an effective beginning.

Drafting the middle reveals what the opening needs to supply, separating the reader’s sequence from the writer’s order of composition. The writer drafts a middle conversation before creating the opening. The writer eventually supplies a beginning after drafting other parts. The completed scenes help determine the opening; the passage does not say the conversation is removed.

Question 2: Main idea

Question 2 · Main idea · medium

The published photograph shows a child leaning over a ferry rail. Beside it in the archive is a sheet of small images made during the same few moments. In some, the child looks away; in others, a passing sleeve hides part of the face. Pencil crosses eliminate several frames, and a circle surrounds the one that became the published photograph. A note beside that circle mentions the curve of the child’s hand. The finished image seems effortless, but the marked sheet preserves a series of choices that readers of the publication would never see.

What is the main idea of the passage?

Choose an answer for question 2
Worked answer and explanation

Answer: A. The marked image sheet reveals the selection process behind a seemingly effortless published photograph.

The crossed-out alternatives, circled frame and note about a particular gesture together reveal deliberate selection behind the final result. The described choices concern one child, visibility and a hand gesture, not a complete passenger record. The child looks away in some frames, and the sheet contains different moments. The passage uses the marks to explain selection; it does not judge the published image as less useful.

Question 3: Main idea

Question 3 · Main idea · hard

At 8:10, I watched a shorebird walk behind a mound of seaweed. Its trail of footprints continued beyond the mound and curved toward a shallow pool. A band of firmer ground interrupted the marks; farther along, the line reappeared on damp sand. I drew the visible sections in solid pencil and joined their ends with a dotted connection. Beside the pool, several prints overlapped, pointing in different directions. I copied that cluster separately rather than assigning each print a place in the sequence. The time in my notebook stands beside the bird I saw entering the seaweed, not beside the later portions of the sketch.

Which statement best captures the main idea?

Choose an answer for question 3
Worked answer and explanation

Answer: C. The notes combine a sighting with physical traces to reconstruct parts of a route without settling every movement or its timing.

The solid sections, dotted connection, separately copied cluster and limited placement of the time must be considered together. They show a partial reconstruction that distinguishes observed traces from unresolved connections, ordering and timing. Only the sighting is timed, and the overlapping prints are copied without individual sequence positions. The surfaces explain breaks in the physical record, but the notes do not establish the bird’s preference or motive. The route is extended beyond the mound, and a dotted connection joins the ends of the visible sections.

Question 4: Main idea

Question 4 · Main idea · easy

My drawing of the shell combines three views. The large outline shows its overall curve, a smaller sketch reveals the opening underneath, and an enlarged detail records the ridges near the tip. Labels tell the reader which view each drawing presents. No single position on the table exposed all those features at once. Turning the shell gave me separate glimpses, and arranging them on one page lets a reader examine the parts without having the object in hand.

What is the main idea of the passage?

Choose an answer for question 4
Worked answer and explanation

Answer: B. Combining labeled views can show features that are not all visible from one position.

The different views supply complementary information that a single viewing position cannot provide. The narrator turns the intact shell and uses different viewpoints; no breaking is described. The page retains both the large outline and the enlarged detail. The combined page is intended to let readers examine its features without the object.

Question 5: Main idea

Question 5 · Main idea · medium

After the snowfall, the garden’s low borders disappeared beneath a smooth white surface. I could no longer tell where one flower bed ended and another began. By afternoon, a line of footprints crossed that surface from the back door to the shed. The route usually attracted no notice among the grass and soil. Now its repeated use stood out. As the snow thinned along the sunny wall, the border stones returned to view, while the tracks across the shaded lawn remained clear.

What is the main idea of the passage?

Choose an answer for question 5
Worked answer and explanation

Answer: D. The snow temporarily conceals some garden features while making a pattern of movement more visible.

The hidden borders and conspicuous footprints show contrasting effects of the same temporary covering. Although the borders disappear at first, the footprints and route become conspicuous. The passage says the route usually attracts no notice, indicating that it already exists. The remaining tracks provide evidence of crossing; visible stones do not cancel it.

Question 6: Main idea

Question 6 · Main idea · easy

No fishing boat left the harbor that morning. From the road, the tied vessels made the waterfront look idle. Down on the quay, however, crews spread nets to inspect their worn places, sorted equipment and carried repaired fittings back aboard. One person compared a replacement part with the piece it would take the place of; another marked sections of rope for attention. The absence of departures gave the crews time to do work that would support later trips.

What is the main idea of the passage?

Choose an answer for question 6
Worked answer and explanation

Answer: A. The harbor remains productive through maintenance even when no boats depart.

The detailed quay activity contrasts with the distant impression of idleness and supports later fishing trips. The crews are actively inspecting and repairing equipment on and near the vessels. The closer view reveals maintenance that the distant impression misses. The passage describes it occurring while the vessels are tied in the harbor.

Question 7: Main idea

Question 7 · Main idea · easy

People arrived at the station carrying different watches and phones. Some devices showed a minute more than others, and passengers occasionally compared them while waiting. Above the platform, the large station clock supplied the reference used by the departure board and staff. When its minute hand reached the announced time, the waiting group moved toward the gate together. They had not arrived together or agreed among themselves when to move; each had turned to the same public signal.

What is the main idea of the passage?

Choose an answer for question 7
Worked answer and explanation

Answer: B. A shared time reference helps separately arriving passengers coordinate their actions.

The different arrival times and personal devices contrast with the common signal that prompts one coordinated movement. The passage describes different personal devices and coordination through the public clock. The passengers arrive separately but use the same signal. The group still responds together when the public clock reaches the announced time.

Question 8: Main idea

Question 8 · Main idea · hard

By midsummer, the woodland flowers in the marked bed had lost their aboveground growth. A visitor suggested moving the labels to wherever plants were still visible. The gardener instead checked each label against a spring sketch. Beside one blank patch, she redirected a wheelbarrow that would otherwise have crossed it. A faded label near the path was replaced only after she matched its number to an entry in the planting book. The new label went back into the same soil. When the visitor returned the following spring, leaves were emerging beside several of the markers that had seemed to identify nothing.

Which statement best expresses the main idea?

Choose an answer for question 8
Worked answer and explanation

Answer: C. Maintained records can preserve knowledge of a planting and guide its care when the plants themselves are temporarily out of sight.

The retained positions, protected blank patch, cross-checked replacement and later emerging leaves together show how records carry usable knowledge across a period without visible growth. The label locations, wheelbarrow decision and planting-book check concern information and protection, not visual decoration. The gardener checks labels against a sketch and a planting book; they are part of a coordinated record, not a substitute for verification. The gardener preserves the original locations, which later correspond to emerging plants.

Question 9: Main idea

Question 9 · Main idea · hard

For the walking puzzle, the first clue named a house number. Readers went directly to the answer without examining the street. Another draft said only, “Look carefully,” and readers stopped at nearly every doorway. The final draft directed attention to a painted bird above one of the doors but asked readers to use the bird’s direction to find the next place. Several doors had birds, so readers still had to compare them with the sketch on the card. The writer kept the sketch, removed an arrow that pointed directly to the destination, and left the street name so readers could be sure they were searching in the right area.

What is the main idea of the passage?

Choose an answer for question 9
Worked answer and explanation

Answer: D. An effective clue gives enough guidance to focus a search while leaving a meaningful part of the solution to the reader.

The two unsatisfactory drafts, retained location information, useful sketch and removed revealing arrow together establish a balance between direction and discovery. The writer retains the street name and a relevant sketch, rejecting both excessive vagueness and direct disclosure. The final version deliberately requires comparison of birds and their directions rather than eliminating that work. The sketch supports comparison, while an arrow directly revealing the destination is removed.

Question 10: Main idea

Question 10 · Main idea · hard

On the wooden printing block, the letter R faced the wrong way to an ordinary reader, while T looked familiar. The apprentice proposed recutting the R. Before deciding, the printer inked the block and took an impression on paper. There the R read normally, but a notch in the border appeared as an unwanted gap. The printer left the R untouched and repaired the border before making another impression. The apprentice put the new print beside the sign they meant to reproduce, then returned the block to the workbench with its odd-looking letter still in place.

Which statement best captures the main idea?

Choose an answer for question 10
Worked answer and explanation

Answer: B. A printing block must be judged by the image it produces, because an unfamiliar-looking feature may be necessary while another feature needs correction.

The normally printing reversed R and the defective border require opposite decisions based on the impression. Together they show why judging the intermediate surface by resemblance alone would be misleading. The familiar appearance on the block is not the test; the paper impression establishes whether the letters print correctly. The R is retained, and the correction concerns a border defect; removing letters is not the central lesson. The reversal is retained for a reason, but the unwanted border gap is repaired, so preservation is not a general rule.

Question 11: Main idea

Question 11 · Main idea · easy

From the front, the embroidery presents a neat border of leaves. Turn it over, and a different arrangement appears: short knots, long connecting threads and places where one color gives way to another. The front shows the intended pattern; the back helps explain how the thread traveled to make it. I photographed both sides for my notes. A single view would have preserved either the finished appearance or much of the working path, but not both together.

What is the main idea of the passage?

Choose an answer for question 11
Worked answer and explanation

Answer: C. Different sides of the embroidery reveal complementary information about its appearance and construction.

The passage contrasts the visible design with the thread routes that produced it and explains why both are recorded. The front presents an intended leaf pattern, while the reverse reveals the thread’s path. The narrator photographs both sides because each supplies useful information. The front is described as neat despite the color changes visible on the back.

Question 12: Main idea

Question 12 · Main idea · medium

During practice on the sheltered water, the rower checked the way ahead by turning to look, then returned her attention to the line trailing behind the stern. A bend in that wake drew her attention to a change in course. She compared the stern’s position with a fixed feature on the distant bank and adjusted her next strokes. The water behind the boat was not her destination, but it supplied information about how the boat had been moving. Looking ahead and reading those traces served different parts of the same task.

What is the main idea of the passage?

Choose an answer for question 12
Worked answer and explanation

Answer: D. Traces behind the boat can provide useful feedback about its movement while the rower also checks the way ahead.

The wake and bank reference provide feedback about course, while the separate look ahead checks the route in front of the boat. She explicitly turns to check the way ahead; the wake supplies additional information, not a replacement for looking. The passage uses it as a clue to course, not as a distance measurement. The feature is fixed and used as a reference for judging the boat’s position.

After this set: choose one missed answer and name the exact mistake: an added assumption, a lost condition, a detail mistaken for the main idea, or another mismatch with the text. Explain the correction in your own words before trying the next set.