Select the correct answer. What is the best thesis statement for the argument?

The Need for Sleep

On the weekdays, I come home with a lot of homework. It takes 2–4 hours each night to complete all of my assignments. I'm often up until midnight or later trying to get my work done. As a result, I get less than 6 hours of sleep at night. According to the National Sleep Foundation, teenagers need just over 9 hours of sleep each night to function at their best. Not getting enough sleep can limit a person's ability to learn and remember, lead to aggressive behavior, and cause illness. For these reasons, making sleep a priority is important. Starting school one hour later would give students (and teachers) an extra hour of sleep each night to help them function at their best.

A.
Not getting enough sleep each night over a period of six months or longer can be harmful to a person's health.
B.
Studies show that melatonin, a brain chemical that causes sleep, is produced later at night in teens than in adults.
C.
Not getting enough sleep at night can cause students to become drowsy during the school day.
D.
Starting the school day at 8:45 a. m. instead of 7:45 a. m. would be beneficial for several reasons.

(Serious answer's only false or incomplete answer's will be reported answer at your own risk)