Which vitamin plays a crucial role in the maintenance of the epithelial barrier and is essential for the integrity of skin and mucous membranes?

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

Explanation

Vitamin A is crucial for maintaining the integrity of skin and mucous membranes, and its deficiency can lead to impaired epithelial barrier function.

Source

Nutrition textbooks
Vitamins Nutrition Vitamin A functions Medium MEDICAL Confidence: high