The various hormones secreted by the anterior pituitary that regulate the secretion of hormones from other endocrine organs are called

tropic hormones

Explanation:

Anterior pituitary is the anterior lobe  of the pituitary gland (hypophysis). It is also called the adenohypophysis. The secretions of the adenohypophysis are involved in the contol of many biological fuunctions: growth, stress, reproduction etc. Two major groups of hormones from the adenohypophysis are:

answer: b

coz red blood cells marrow and circulates the body for 120 days.