Fact 1: An animal requires nutrients to grow and heal.

Fact 2: Food is the ideal source of nutrients.

Given the two facts above, answer the question "What does an animal require food for?" with the following options: 
- hydration
 - to grow and heal
 - for cold
 - aerobic capacity
 - organic molecules
 - food and shelter
 - to chill
 - for electricity


 

  to grow and heal       