This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
Hormone necessary for water and sodium balance 
Select and explain. 
A. Progesterone, B. Cortisol, C. Estrogen, D. Aldosterone
D: Aldosterone
Answer: D: Aldosterone 
Explanation: Ans: d (Aldosterone)Ref: Vasudevan & Sreekumari, 6th edi., Pg. 357Aldosterone is secreted by zona glomerulosa of the adrenal cortex. It regulates sodium-potasium exchange and sodium-hydrogen exchange at the renal tubules.The net effect is the sodium retention