What is the purpose of the final sentence?
Teenagers tend to fall asleep later and wake later than younger children, a pattern that scientists link to changes in the body's internal clock during adolescence. In some countries, schools have moved the start of the day by an hour. Early reports describe fewer students arriving late and fewer who fall asleep in class. However, a later finish can clash with sports practice and with parents' working hours, so not every community finds it easy to change. Some experts suggest a smaller step: keep the start time but avoid scheduling exams in the first period.
Answer and explanation
Correct answer: D. To offer a smaller alternative to changing the whole school timetable
- Step 1: The final sentence says 'a smaller step'. Step 2. Its role is to propose a lighter alternative. Answer: To offer a smaller alternative to changing the whole timetable. Why not the others: The sentence does not say that experts disagree with scientists, or that exams are unimportant, or that late sleeping is harmful.
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