Question

why do teens need 8 - 10 hours of sleep each night?
(1 point)
it helps their bones to grow much longer.
it helps their immune system stay strong.
it makes their eyesight become much clearer.
it gives them a lot more physical energy.

Explanation:

Sleep is crucial for teenagers. During sleep, the body undergoes various restorative processes. One important aspect is the strengthening of the immune system. When teens get 8 - 10 hours of sleep, their immune system can function optimally. Bones grow mainly due to factors like nutrition and growth hormones, not directly because of sleep duration in this way. Eyesight improvement is more related to eye - care habits and genetics rather than just sleep. While sleep does give energy, the most significant and scientifically well - established reason among the options for the recommended sleep duration for teens in this context is the immune system support.

Answer:

It helps their immune system stay strong.