Answer:
Option (5).
Explanation:
Hormones may be defined as the chemicals that are excreted in the body in response to a particular signal. These hormones maintains the physiology of the body.
The kidney consists of the adrenal cortex and adrenal medulla. The adrenocorticotrophic hormone is released by the anterior pituitary that stimulate the adrenal cortex to release the cortisol that maintains the steriod levels in the body.
Thus, the correct answer is option (5).