A person lacking vasopressin would have to drink 180 L of water per day to make up for the water lost in the urine.

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Quizplus · Accepted Answer

Vasopressin (also known as antidiuretic hormone) helps regulate the body's retention of water by increasing water reabsorption in the kidneys, thus reducing urine volume. A deficiency in vasopressin can lead to increased urine output, but the amount of water a person would need to drink to compensate for the loss is significantly less than 180 L per day. The actual amount would depend on the severity of the deficiency and individual factors, but it is generally in the range of a few liters more than the typical daily intake, not hundreds of liters.

A Person Lacking Vasopressin Would Have to Drink 180 L