Which of the Following Is NOT One of the Pieces

Which of the following is NOT one of the pieces of evidence that supports delaying school start times?

A) Adolescents go to bed at approximately the same time no matter what time they have to wake up in the morning. Thus, later school start times are associated with greater amounts of sleep.
B) Schools with later start times have students with better attendance records.
C) Schools with later start times have students who have higher academic achievement.
D) Delaying school start times provides more time for sports and other exercise throughout the day.