In humans, the digestion of carbohydrates like starch, begins in which of the following parts?

Buccal cavity

The correct answer is Option (4) - Buccal cavity

In humans, the digestion of carbohydrates like starch primarily begins in the buccal cavity, also known as the mouth. The process starts with the action of an enzyme called salivary amylase, which is secreted by the salivary glands. Salivary amylase breaks down starch molecules into simpler sugars like maltose. This initial digestion of carbohydrates in the mouth is an important step in the overall process of carbohydrate digestion.