You are presented with the question "Why do we generally treat H2O?" and the following answer choices: 
- to add water to crops
 - hydration
 - vaporization
 - to water the garden
 - to drink it
 - looseness
 - to track it
 - evaporation

Now knowing that treating water is used to remove harmful substances before drinking and for a scientist, water is H2O whether from the Ganga or a tap, choose the best answer.


 

     to drink it    