Which of the following best describes the function of the sentence in lines 14-16 ("Certainly... sleep")?
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The primary purpose of the passage is to
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According to the author of the passage, which of the following generalizations about memory and sleep is true?
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The importance of the study mentioned in lines 12–14 is that it
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In the context in which it appears, "shades" (line 2) most nearly means
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