$A$ decrease in blood pressure/volume will not cause the release of

Which one of the following four secretions is correctly matched with its source,target,and nature of action?

$A$ fall in $GFR$ can activate the $JG$ cells to release ...... which can stimulate the glomerular blood flow and thereby the $GFR$ back to normal.

Select the correct option for Erythropoietin.
$\quad\quad\quad$ Secretion $\quad\quad\quad$ Effect

Atrial Natriuretic Factor $(ANF)$ acts as a

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 $ANP$.