The correct option is A True
Tropic hormones are those hormones which have other endocrine glands as their targets. Usually, the endocrine gland secretes a hormone that brings about many metabolic effects but pituitary gland secretes hormones which make other endocrine glands to secrete respective hormones in turn. This is the reason it is called the master gland. It acts as a controller of other endocrine glands.