Which nutrient deficiency is associated with the development of night blindness and impaired immune function?

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

Explanation

Vitamin A deficiency can lead to night blindness and impaired immune function, as it plays a crucial role in maintaining healthy vision and immune cells.

Source

WHO reports on micronutrient deficiencies
Metabolic and Nutritional Disorders Nutrition Vitamin Deficiencies Medium MEDICAL Confidence: high