You are presented with the question "astronauts require what food for extended flights?" and the following answer choices: 
- Echinoderm.
 - layers of fat
 - dehydrated
 - fresh
 - hand picked
 - nutrients
 - frozen
 - hydration

Now knowing that astronauts require preserved food for extended flights and most of the Shuttle foods are preserved by dehydration, which saves weight and storage space, choose the best answer.


 

   dehydrated      