Volume of urine is regulated by

Which one of the following statements is correct with respect to kidney function regulation?

Vasopressin stimulates the reabsorption of water and the reduction of urine secretion. Hence,vasopressin is also called:

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.

Which of the following are related to the control of human kidney functions?
$A.$ Osmoreceptors in the body get activated by excess loss of fluid,which results in the inhibition of $\text{ADH}$ secretion.
$B.$ $A$ fall in $\text{GFR}$ can activate the release of renin.
$C.$ Low blood flow to the atria stimulates the secretion of $\text{ANF}$.
$D.$ $\text{ANF}$ acts as a check on the renin-angiotensin mechanism.
$E.$ $\text{ADH}$ can also affect kidney function by its constrictory effect on blood vessels.
Choose the correct answer from the options given below:

What does the $JGA$ (Juxtaglomerular Apparatus) control?