Fact 1: An animal requires warmth for survival.

Fact 2: Animals act through their instincts for survival.

Given the two facts above, answer the question "What is one instinct that animals use to stay alive?" with the following options: 
- motility
 - Warmth
 - stability
 - Cold
 - Territory
 - toughness
 - Peace
 - hormones


 

  Warmth       