Answer:
B. reabsorption of essential compounds
Step-by-step explanation:
Sweat is a function of the human body and other animals that regulates body temperature by excreting water to the skin and with this cooling off the msucles and body, and by doing this it excretes excess salts and water, but sweat can not rearsorb essential compounds since it is basically water and salts leaving the body. So the answer is B. reabsorption of essential compounds.