If you forget your water bottle when you go for a long walk on a warm day, what signal would most likely be sent to your kidneys?

C

Explanation:

On detecting less amount of water in blood the hypothalamus gives signals for releasing the anti-diuretic hormone which causes kidneys to remove lesser amount of water from the blood.

answer: 45

explanationyou have to add as well to be it could be

thinking it would be d not too sure but i think it's right