Fact 1: If food is not immediately used by the body for energy then that food will be stored for future use.

Fact 2: Basically, heat is energy.

Given the two facts above, answer the question "When food is not immediately used for what it is stored in the body?" with the following options: 
- fats
 - pH
 - warmth
 - matter
 - sodium
 - heat
 - sugar
 - Mass


 

      heat   