A school administrator hypothesizes that delaying high school start times by an hour leads to higher attendance and better academic performance because students get more sleep.
Which finding, if true, would most strongly support the administrator's hypothesis?
- A
Some students participate in extracurricular activities after school.
- B
High school students take a wide variety of subjects.
- C
Most teenagers report enjoying social activities in the evening.
- Dcheck_circle
After three high schools delayed their start times by an hour, average attendance and grades rose, while three comparison schools without changes saw no improvement.
Explanation
A directly compares schools with and without the change, with attendance and grades responding as predicted. B, C, and D are tangential.