You are presented with the question "What is a chemical element essential for good health?" and the following answer choices: 
- sweating
 - light energy
 - oxygen
 - bioaerosols
 - Chlorophyll
 - hydration
 - Potassium
 - fever

Now knowing that minerals are chemical elements that are essential for body processes and potassium is a trace mineral essential for growth and good health, choose the best answer.


 

       Potassium  