Fact 1: Sweating reduces body heat.

Fact 2: Sweat is made of salt and water.

Given the two facts above, answer the question "Saltwater excretion reduces what?" with the following options: 
- emissions
 - dehydration
 - light energy
 - bacteria
 - sweat
 - energy usage
 - evaporation
 - body heat


 

        body heat 