You are presented with the question "What can thorough cooking do to food?" and the following answer choices: 
- make it inedible
 - extend the shelf life
 - Damages them
 - make it colder
 - make it saltier
 - converting electricity to heat
 - it keeps an organism warm
 - get chemical reactions started

Now knowing that killing microorganisms in food can be used to extend the shelf life of that food and thorough cooking is the most effective way to kill microorganisms in food, choose the best answer.


 

  extend the shelf life       