Question

Deficiency of which vitamin causes night blindness?

• A. Vitamin A
• B. Vitamin \( B_1 \)
• C. Vitamin C
• D. Vitamin D

Hint:

Vitamin A is crucial for vision and immune function. Its deficiency causes night blindness.

Answer 1

The Correct Option is A

Step 1: Night blindness (nyctalopia) is caused due to the deficiency of Vitamin A. 

Step 2: Vitamin A is essential for the production of rhodopsin, a pigment necessary for low-light vision. 

Step 3: Deficiency can be treated by increasing intake of vitamin A-rich foods like carrots, fish oil, and leafy greens.