You are presented with the question "What causes food to break down?" and the following answer choices: 
- Blood
 - bacteria
 - Enzymes
 - Saliva
 - sodium
 - heat
 - Esophogus
 - Acids

Now knowing that digestion is the process of breaking down food into components the body can absorb and digestive enzymes are necessary for a complete digestion, choose the best answer.


 

   Enzymes      