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Which of the following does not favour the formation of large quantities of dilute urine?

  • Alcohol

  • Caffeine

  • Renin

  • Atrial-natriuretic factor

Answer

C.

Renin

Renin secreted by JGA regulates the glomerular filtration rate by inducing multihormonal system i.e. RAAS (Renin Angiotensin - Aldosterone System). Activation of this system increase the reabsorption rate of sodium (Na+) and water, making the urine more concentrated. 
Alcohol decreases vasopressin level which lowers reabsorption of water thus making urine more dilute. ANF causes vasodilation and acts as check on RAAS

Renin secreted by JGA regulates the glomerular filtration rate by inducing multihormonal system i.e. RAAS (Renin Angiotensin - Aldosterone System). Activation of this system increase the reabsorption rate of sodium (Na+) and water, making the urine more concentrated. 
Alcohol decreases vasopressin level which lowers reabsorption of water thus making urine more dilute. ANF causes vasodilation and acts as check on RAAS