You are presented with the question "Which chemical added to water prevents illnesses? " and the following answer choices: 
- Glucose
 - evaporation
 - Chlorine.
 - sugar
 - Allergies
 - sweating
 - energy
 - hydration

Now knowing that microorganisms can cause infections and chlorination uses liquid chlorine bleach to kill microorganisms, choose the best answer.


 

   Chlorine.      