Fact 1: Sweating reduces body heat.

Fact 2: Humans, of course, can sweat and perspiration tastes salty.

Given the two facts above, answer the question "What does perspiration do?" with the following options: 
- decreases
 - increase body heat
 - Evaporation
 - reduce body heat
 - rain
 - It gets heated up
 - change weather
 - It expands


 

    reduce body heat     