Which vitamin is primarily responsible for the maintenance of epithelial and mucosal integrity in the human body?

A Vitamin A ✓
B Vitamin C
C Vitamin D
D Vitamin E

Explanation

Vitamin A plays a crucial role in maintaining the integrity of epithelial and mucosal surfaces, including the skin, respiratory, and gastrointestinal tracts.

Source

National Institutes of Health
Vitamins Nutrition Vitamin A Functions Easy MEDICAL Confidence: high