Releasing factors are secreted by the a. pineal gland. b. pancreas. c. hypothalamus. d. pituitary gland.

C) Hypothalamus

Explanation:

The hypothalamus is the part of the brain that lies below the thalamus and over the pituitary gland.

The hypothalamus is the source of various important releasing factors and hormones that stimulate the release of other hormones from the endocrine glands in the body. Examples of releasing factors include;

1) Prolactin-releasing factor which regulates the release of prolactin.

2) Somatotropin-releasing factor which regulates the release of somatotropic hormone, also known as growth hormone.

3) The corticotropin-releasing factor which regulates the release of adrenocorticotropic hormone.

the answer is c.mitochondria. glad to .