Fact 1: Minerals are chemical elements that are essential for body processes.

Fact 2: Potassium is a trace mineral essential for growth and good health.

Given the two facts above, answer the question "What is a chemical element essential for good health?" with the following options: 
- sweating
 - light energy
 - oxygen
 - bioaerosols
 - Chlorophyll
 - hydration
 - Potassium
 - fever


 

       Potassium  