You are presented with the question "What does potassium do for an animal?" and the following answer choices: 
- duplicate itself
 - Regrows it
 - Relieve pain
 - protect them
 - food and shelter
 - motility
 - Helps it survive
 - heating liquids

Now knowing that an animal requires nutrients for survival and potassium is an essential nutrient for plants and animals, choose the best answer.


 

       Helps it survive  