Question

not getting enough sleep a few night in a row can lead to: increased stress better grades cautious behavior mood swings

Explanation:

Lack of sleep disrupts the body's hormonal balance and cognitive - emotional regulation. It is known to increase stress hormones like cortisol, and can cause mood swings. It does not lead to better grades as it impairs cognitive functions, nor typically to cautious behavior.

Answer:

A. Increased Stress, D. Mood Swings