You are presented with the question "What can be used to extend the shelf life of that food?" and the following answer choices: 
- sterilization
 - Enzymes
 - poison
 - chemical changes
 - hybridization
 - gasoline
 - rays or beams
 - Cooking

Now knowing that killing microorganisms in food can be used to extend the shelf life of that food and sterilization kills all viable microorganisms, choose the best answer.


 

 sterilization        