What change did the school in the city test?

Many teenagers complain that they cannot fall asleep before eleven at night, yet they must be at school by half past seven. Sleep researchers say this is not simply laziness. During the teenage years the body clock shifts, so young people feel sleepy later in the evening and wake naturally later in the morning. Experts suggest that most teenagers need between eight and ten hours of sleep, but a typical school week gives them far less. One school in a large city tested a simple change: it moved the start of the school day forty-five minutes later for one term. Teachers reported that learners arrived on time more often and fell asleep in class less frequently. The research team was careful, however, not to claim that a later start would solve every problem. Results from a single school, they warned, cannot be assumed to apply everywhere, and more studies are needed before any national rule is considered.

Answer and explanation

Correct answer: B. It began the school day forty-five minutes later

  1. Step 1: The school moved the start of the day forty-five minutes later for one term.
Answer
It began the school day forty-five minutes later.
Why not the others: It ended the school day an hour earlier each afternoon: the start, not the end, of the day was changed. It cancelled the first lesson of the day for a term: the first lesson was not cancelled; the start time moved. It gave learners a nap period after lunch each day: no nap period is mentioned.

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