Answer: c. regulates the secretory activity of the pituitary gland.
Explanation:
The hypothalamus can be defined as a small part of the brain that is located at the base of the brain. It has two functions in the human body, first releasing hormones and maintaining homeostasis.
The hypothalamus is responsible for linking the endocrine system to the brain through the pituitary gland. It stimulates the secretion and inhibition of the hormones from the anterior pituitary.