Arefrigerator is used for keeping food fresh for a long period of time, and kitchen appliances include refrigerator. Given these facts, what is used for keeping food fresh for a long period of time among the following options:
- Gardens
 - an electric stove
 - A kitchen appliance
 - Fuel cells
 - Plates
 - Air freshener
 - Electric generators
 - electricity


 

   A kitchen appliance      