You are presented with the question "What does an animal require food for?" and the following answer choices: 
- hydration
 - to grow and heal
 - for cold
 - aerobic capacity
 - organic molecules
 - food and shelter
 - to chill
 - for electricity

Now knowing that an animal requires nutrients to grow and heal and food is the ideal source of nutrients, choose the best answer.


 

  to grow and heal       