Fact 1: Astronauts require preserved food for extended flights.

Fact 2: Astronauts travel into space aboard space shuttles.

Given the two facts above, answer the question "Space shuttle travelers require what food for extended flights?" with the following options: 
- layers of fat
 - short-lived
 - nutrients
 - perishable
 - preserved
 - little
 - Proteins
 - Dehydration


 

     preserved    