Fact 1: Aplant requires nutrients to grow.

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

Given the two facts above, answer the question "What does potassium do for plants?" with the following options: 
- Helps them pollinate
 - Helps them grow
 - duplicate itself
 - hydrate their cells
 - Makes them taste better
 - hydrogen and oxygen
 - Decrease bodily water
 - Kills them


 

  Helps them grow       