Question

the ______ secretes hormones that regulate the body’s fluid levels. adrenal pituitary testes kidneys

Explanation:

The adrenal glands secrete hormones like aldosterone which helps regulate the body's fluid and electrolyte balance. The pituitary gland is mainly involved in growth - related and other endocrine - related functions not directly fluid - level regulation. The testes produce sex hormones. The kidneys filter blood and regulate fluid levels but do not secrete hormones for fluid - level regulation in the same sense as the adrenal glands in this context.

Answer:

A. adrenal