You are presented with the quiz "What does irradiating food do?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "irradiating food can be used to kill existing microorganisms in the food" and "food irradiation is one tool for improving food safety by killing pathogenic microorganisms". 

So, what's the best answer to the question?


 

   improves food safety        