You are presented with the quiz "Perspiration does what to the skin when it is evaporated from the skin onto the air?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sweat wets the skin, and when it evaporates, it cools the body" and "diaphoresis is a fancy medical term for perspiration or sweating". 

So, what's the best answer to the question?


 

     cools it      