Answer :
The sentence that best replaces sentence 3 to achieve this goal is option B. In the last five years, over 250 schools have reported positive outcomes from delaying start times.
What are the positive outcomes from delaying start times?
A lot of Compelling evidence has been shown to be that delaying school start times is known to be linked with positive outcomes for example increased sleep duration, lower daytime sleepiness as well as improved mood.
Note that other evidence that is supporting the above is the improvements in academic performance.
Note also that option B was chosen because over 250 schools have compelling evidence and as such, The sentence that best replaces sentence 3 to achieve this goal is option B. In the last five years, over 250 schools have reported positive outcomes from delaying start times.
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