Fact 1: When the body is hot , sweat is produced to cool the body.

Fact 2: Exercise, fever, and heat cause the body's temperature to rise.

Given the two facts above, answer the question "what causes sweat to be produced to cool a person down?" with the following options: 
- exercise and fever
 - wool pants
 - the sun
 - Movement of an air mass
 - shooting stars
 - Evaporation
 - centralized nervous system
 - water vapor


 

 exercise and fever        