(A) Pituitary gland
The pituitary gland is the endocrine gland that regulates the growth of the human body by secreting growth hormone.
The pituitary gland (master gland) secretes growth hormone (GH), which directly controls body growth. The thyroid regulates metabolism, pancreas regulates blood sugar, and adrenal gland manages stress responses. Examiners expect you to recall this standard fact from the endocrine system topic in Chapter 7/Chapter 6.