Question

Judging from the volume of urine produced by each student, which person had the lowest level of ADH in their blood at the 40 minute mark?

A. The student who drank tomato juice, which had the same salt concentration as blood plasma.
B. The student who drank nothing.
C. All three students had the same level of ADH.
D. The student who drank soda, which had no salt.

Answer 1

The student who drank nothing had the lowest level of ADH at the 40 minute mark, leading to less urine production.

Step-by-step explanation:

The person who had the lowest level of ADH in their blood at the 40 minute mark based on the volume of urine produced would be the student who drank nothing. When a person drinks a lot of water, the pituitary gland releases a lower amount of ADH, resulting in less water reabsorption by the blood and a large volume of urine production. Therefore, if a student didn't drink anything, their blood would have a higher concentration of ADH, leading to less urine production compared to other students.