Which of the following nutrients is essential for the maintenance of healthy epithelial tissues?

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

Explanation

Vitamin A is essential for the maintenance of healthy epithelial tissues, including the skin, respiratory tract, and gastrointestinal tract.

Source

Guyton and Hall Textbook of Medical Physiology
Metabolic and Nutritional Disorders Nutrition Vitamins and Epithelial Tissues Easy MEDICAL Confidence: high