Keeping food cold is used for keeping food fresh.
The purpose of refrigeration the fundamental reason for having a refrigerator is to keep food cold.
A refrigerator keeps food fresh.
What is an important function of a refrigertor?
Options:
1. cool the kitchen
2. adding heat
3. keep meat and vegetables separate
4. keep food fresh
5. heat energy
6. staying warm
7. freeze wine
8. Electrical energy