Killing microorganisms in food can be used to extend the shelf life of that food, and irradiation kills microorganisms that spoil food. Given these facts, what can be used to extend the shelf life of food among the following options:
- Cooking
 - Enzymes
 - rays or beams
 - irradiation
 - leaving food at room temperature
 - Dehydration
 - eating food
 - grinding food


 

    irradiation     