Answer the following question given this paragraph: 

The mouth is the first digestive organ that food enters. The sight, smell, or taste of food stimulates the release of saliva and digestive enzymes by salivary glands inside the mouth. Saliva wets the food, which makes it easier to break up and swallow. The enzyme amylase in saliva begins the chemical digestion of starches to sugars.


Q: What is the first digestive organ that food enters?

 Choices:

- stomach

- tongue

- esophagus

- mouth

A:
mouth
