Keeping food cold is used for keeping food fresh.
Sulfites keep foods fresh-looking (e.g., fruits, vegetables) and help prevent bacteria from growing.
Keeping food cold  prevent bacteria from growing.
Keeping food cold prevents
a) The bending of a ray of light
b) recovery time from fatigue
c) decreasing nutrients
d) Dehydration
e) decreasing flavor
f) fading color
g) bacteria from growing
h) direct damage to the lungs