Question

what does the hormone insulin regulate in the human body?

a. glucose levels

b. salt and water levels

c. menstrual cycle

d. sleep cycle

Explanation:

Insulin is a pancreatic hormone that acts to lower blood glucose by promoting its uptake into cells and storage as glycogen, directly regulating blood glucose levels. Other options are regulated by different hormones: salt/water by aldosterone/ADH, menstrual cycle by estrogen/progesterone, sleep cycle by melatonin.

Answer:

A. glucose levels