Difficulty: Hard

Average Score: 40%

A turning leaf stays green at first, then reveals splotches of yellow and red as chlorophyll gradually breaks down. Dark green seems to stay longest in the veins, outlining and defining them. During the summer, chlorophyll breaks down in the heat and light, but it is also being steadily replaced. In the fall, on the other hand, no new pigment is produced, and so we notice the other colors that were always there, although chlorophyll's shocking green hid them from view. With their camouflage gone, we see these colors for the first time all year, and marvel, but they were always there, hidden like a vivid secret beneath the hot glowing greens of summer.

Which sentence should be deleted from the passage because it contains irrelevant information?

Rationale

Sentence 12 should be deleted from the passage because it contains irrelevant information.

This sentence discusses how most people have adapted to consolidated sleep, which deviates from the main point of the passage about the natural human sleep pattern of having two distinct sleep periods.

A (Sentence 3) YOUR ANSWER

This sentence describes the struggle many people face with sleep, which is relevant to the overall theme of the passage that discusses sleep patterns and challenges. It sets the stage for the argument regarding the adequacy of the traditional advice about sleep.

B (Sentence 6) YOUR ANSWER

This sentence presents the results of a study that supports the main argument of the passage—that human sleep may naturally occur in two phases. It is directly relevant to the discussion on sleep and enhances the understanding of the research presented.

C (Sentence 7) YOUR ANSWER

This sentence refers to historical data that supports the idea of segmented sleep, contributing to the passage's argument. It provides context that validates the claim about the natural state of human sleep, making it relevant to the reader.

D (Sentence 12) CORRECT

This sentence mentions that most people have adapted to consolidated sleep, a point that is not central to the argument being made about the natural two-sleep pattern. It introduces a tangent that detracts from the focus on historical and scientific perspectives on sleep.

Conclusion

The passage primarily argues that humans may naturally experience sleep in two segments rather than in one continuous block. Deleting Sentence 12 refines the focus on the historical and scientific evidence supporting this idea, ensuring that the reader remains engaged with the core argument without deviation. By removing unrelated information, the passage becomes clearer and more compelling in its discussion of sleep patterns.

Which sentence should be deleted from the passage because it contains irrelevant information?

Sentence 12 should be deleted from the passage because it contains irrelevant information.

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