You are presented with the question "What do those who go out into space require for extended flights?" and the following answer choices: 
- preserved food
 - fresh vegetables
 - Electrical energy
 - heat energy
 - food and shelter
 - Energy.
 - fresh fruits
 - luxury items

Now knowing that astronauts require preserved food for extended flights and astronauts go out into space, choose the best answer.


 

 preserved food        