Thirst is used to make an animal realize that it needs to replenish its bodily water by the body, and water hydrates the cells. Given these facts, thirst is used to make animals realize they need to what among the following options:
- remove their cells
 - filter their beverages
 - recovery time from fatigue
 - reusing things
 - moisturize their eyes
 - hydrate their cells
 - Converting waste.
 - they body they live in


 

      hydrate their cells   