Irradiating food can be used to kill existing microorganisms in the food, and food irradiation is blazingly high-tech. Given these facts, a blazingly high-tech method can be used to kill existing microorganisms in what among the following options:
- blood
 - trout
 - caverns
 - stars
 - food
 - algae
 - radioactive material
 - humans


 

     food    