You are presented with the question "A working refrigerator is good protection from what?" and the following answer choices: 
- Electric devices
 - plastic
 - Abnormal cell growth
 - darkness
 - Temperature changing
 - a pathogens
 - air, light and heat
 - cold

Now knowing that arefrigerator is used for keeping food fresh for a long period of time and air, heat and light cause dried food to spoil, choose the best answer.


 

       air, light and heat  