What does the writer imply about adults who sleep less than seven hours?
For most of history sleep was regarded as a period of mere inactivity, a gap in the day during which the body simply rested. Research over the past century has overturned that view. During sleep the brain consolidates memories, clearing away unnecessary connections while strengthening important ones, and it flushes out waste products that build up during waking hours. Chronic lack of sleep has been linked to poorer concentration, weakened immunity and a higher risk of heart disease. Despite this, many adults regularly sleep fewer than the recommended seven hours, often treating tiredness as a sign of dedication. Scientists argue that this attitude is mistaken: a well-rested worker is, in the long run, a more productive one.
Answer and explanation
Correct answer: C. They often regard tiredness as proof of commitment
- Step 1: The passage says tiredness is often treated as a sign of dedication.
Answer
They often regard tiredness as proof of commitment.
Why not the others: Adults are not said to be successful, unaware or daytime sleepers; they treat tiredness as dedication.
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