Fact 1: Sweat wets the skin, and when it evaporates, it cools the body.

Fact 2: Diaphoresis is a fancy medical term for perspiration or sweating.

Given the two facts above, answer the question "Perspiration does what to the skin when it is evaporated from the skin onto the air?" with the following options: 
- reduced heat
 - cleans it
 - heats it
 - temperature
 - cools it
 - heat or cold
 - air cools
 - turns it to steam


 

     cools it    