To match List I (types of epithelium) with List II (examples where these epithelia are found), we need to understand the characteristics and common locations of each type of epithelial tissue.

Here's the clarification for each match:

Unicellular glandular epithelium: This refers to single cells that function as glands, such as goblet cells. They are typically found in epithelial linings where they secrete mucus; within the digestive tract, goblet cells are common components.

Compound epithelium: This type is characterized by multiple layers of cells and is primarily protective. Common examples include skin and the inner lining of the mouth which needs protection against mechanical and chemical stress.

Multicellular glandular epithelium: This is found in glands composed of many cells. Examples include the salivary glands, pancreas, etc., where multiple cells work together to produce and secrete substances like enzymes and saliva.

Endocrine glandular epithelium: These glands are ductless and release hormones directly into the blood. An example of such a gland is the pancreas, which not only acts as an exocrine gland by producing digestive enzymes but also functions endocrinologically by regulating blood sugar levels through insulin and glucagon production.

Based on the above understanding:

• A (Unicellular glandular epithelium) matches with III (Goblet cells of alimentary canal).
• B (Compound epithelium) matches with IV (Moist surface of buccal cavity).
• C (Multicellular glandular epithelium) matches with I (Salivary glands).
• D (Endocrine glandular epithelium) matches with II (Pancreas).

Thus, the correct answer is Option C: A-III, B-IV, C-I, D-II.