The correct option is A ACTH
During stressful situations, more CRH (corticotropin-releasing hormone) is produced by the hypothalamus. CRH stimulates the release of ACTH (adrenocorticotropic hormone) by the anterior pituitary. The ACTH stimulates the adrenal cortex to release glucocorticoids such as cortisol, which are also called stress hormones.
Melatonin released by the pineal gland controls the diurnal cycle of the body.
MSH (melanocyte-stimulating hormone) stimulates the production of melanin by melanocytes in skin cells.
TSH stimulates the secretion of thyroid hormones by the thyroid gland.