Final answer:
Carbohydrates are enzymatically broken down primarily in the small intestine.
Step-by-step explanation:
The enzymatic breakdown of carbohydrates primarily occurs in the small intestine. In the mouth, saliva contains an enzyme called amylase that begins the process of breaking down starches into maltose. However, the action of amylase is stopped in the acidic environment of the stomach. Once the food enters the small intestine, pancreatic amylase continues the breakdown of carbohydrates into smaller fragments like glucose and maltose.