You are presented with the question "What does shivering generate?" and the following answer choices: 
- kinetic
 - energy
 - friction
 - Energy.
 - expels heat
 - heat
 - warmth
 - rhythm

Now knowing that shivering occurs when many muscles contract a little bit all at once and shivering causes muscle contractions to warm the body, choose the best answer.


 

       warmth  