Volume of urine is regulated by
a)	Aldosterone	b)	Aldosterone and testosterone
c)	ADH	d)	Aldosterone and ADH

(d)

Both Aldosterone and ADH regulate volume of urine. ADH (antidiuretic hormone) stimulates the reabsorption of water through the distal convoluted tubule of the kidney nephron in mammals and thus, limits the water content and the overall volume of urine. Aldosterone, secreted from adrenal cortex, increases the reabsorption of sodium ions and water and the release of potassium ions in the collecting duct and DCT.