Question

1. which sentence best completes the explain step?

(a) \average nightly sleep increased by 43 minutes\ (cdc 12).
(b) according to the cdc...
(c) this shows that later start times likely improve learning because students are more rested.
(d) (cdc 12).

Explanation:

The statement about increased sleep improving learning due to students being more rested is a reasonable and evidence - based claim related to health and learning. Option A just gives a sleep - time increase fact. Option B only mentions the CDC without a clear connection to learning improvement. Option C is about start times and learning improvement but is more about the start - time factor rather than the direct link of sleep increase to learning.

Answer:

C. This shows that later start times likely improve learning because students are more rested.