The gland that regulates body growth is the

A) adrenal.
B) thyroid.
C) hypothalamus.
D) pituitary.

The pituitary gland is often called the "master gland" because it produces and secretes many hormones that regulate other endocrine glands in the body. One of the hormones it produces is growth hormone, which stimulates body growth and affects muscle and bone growth, as well as fat distribution. Therefore, the pituitary gland is the gland that regulates body growth.