Which vitamin deficiency can cause a condition characterized by night blindness, impaired immune function, and skin problems?

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

Explanation

Vitamin A deficiency can cause night blindness, impaired immune function, and skin problems due to its role in maintaining healthy epithelial tissues and immune function.

Source

Nutrition textbooks
Vitamins Nutrition Vitamin deficiencies Easy MEDICAL Confidence: high