Renin is secreted by

$A$ person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result 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 $ANP$.

Given below are two statements.
$Statement-I$: Only $ADH$ is sufficient for homeostasis.
$Statement-II$: $RAAS$ stimulates $Na^+$ reabsorption, thereby maintaining the osmolarity of body fluid.
In the light of the above two statements, choose the most appropriate answer from the options given below.

Fill in the gaps:
Reabsorption of water from distal parts of the tubules is facilitated by hormone ................... .

The occurrence of diuresis following saline ingestion is due to: