Fact 1: Friction causes the temperature of an object to increase.

Fact 2: Friction Rubbing an object on another object can produce friction.

Given the two facts above, answer the question "what does rubbing an object on another object cause that object to do?" with the following options: 
- heat production
 - heat is produced
 - sandpaper
 - It gets heated up
 - decrease in temperature
 - explode
 - heat the body
 - increase in temperature


 

        increase in temperature 