You are presented with the question "What can be used for survival in the desert?" and the following answer choices: 
- nutrients
 - shade
 - food and shelter
 - salt and water.
 - heat
 - picnics
 - Conserving water
 - Chemical energy

Now knowing that conserving water can be used for survival in a dry environment and deserts are usually very, very dry, choose the best answer.


 

       Conserving water  