The correct option is C Vasopressin
ADH or anti-diuretic hormone (Vasopressin), secreted by hypothalamus and stored in posterior pituitary gland, acts on kidney. It concentrates the urine by promoting the reabsorption of water and salts into the cortical collecting ducts.
ACTH or adreno-corticotropic hormone acts on adrenal cortex and helps in secretion of cortical hormones.
TSH or thyroid stimulating hormone acts on thyroid gland and stimulates the synthesis of hormones of the thyroid gland.
Cortisol is a glucocorticoid mainly involved in carbohydrate metabolism.