$ADH$ regulates the water permeability of:

Select the correct option with respect to the following statements:
$(a)$ Angiotensin $II$ constricts arterioles in the kidney to reduce blood flow and decreases blood pressure when blood flow to the afferent arteriole decreases.
$(b)$ Angiotensin $II$ stimulates the adrenal cortex to release aldosterone for more absorption of $Na^+$ and $Cl^-$ ions in the $DCT$.
$(c)$ Blood osmolarity varies with the secretion of aldosterone and $ANP$.

Select the incorrect option for $ADH$.

"Water drinkers" is the name given to persons who have:

Renin is released by

Angiotensinogen protein is produced and secreted by . . . . . . .