Astronauts require preserved food for extended flights, and most of the Shuttle foods are preserved by dehydration, which saves weight and storage space. Given these facts, astronauts require what food for extended flights among the following options:
- Echinoderm.
 - layers of fat
 - dehydrated
 - fresh
 - hand picked
 - nutrients
 - frozen
 - hydration


 

   dehydrated      