Why do you think campers and soldiers use freeze-dried food

Freeze-dried foods are commonly eaten by campers and soldiers. ... Because these organisms cannot reproduce without water, however, freeze-dried foods can be stored at room temperature. Another advantage of freeze-dried foods is that they are lightweight. Removing the water from food reduces its mass by about 90 percent.

Explanation:

the correct answer is 2 and 4

i believe the answer is snake.