Fact 1: An animal requires nutrients for survival.

Fact 2: Potassium is an essential nutrient for plants and animals.

Given the two facts above, answer the question "What does potassium do for an animal?" with the following options: 
- duplicate itself
 - Regrows it
 - Relieve pain
 - protect them
 - food and shelter
 - motility
 - Helps it survive
 - heating liquids


 

       Helps it survive  