Which statement would the scientists mentioned most likely agree with?
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: A. Sacrificing sleep reduces productivity over time
- Step 1: They argue a rested worker is more productive in the long run.
Answer
Sacrificing sleep reduces productivity over time.
Why not the others: The scientists say the opposite of the other three: more sleep is needed, daytime sleeping is not suggested and concentration worsens.
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