Multiple choice

The deficiency of vitamin A causes

  1. malaria

  2. night blindness

  3. scurvy

  4. cholera

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin A deficiency is the primary cause of night blindness (nyctalopia). Vitamin A is essential for producing rhodopsin, a pigment in the retina that enables vision in low-light conditions. Malaria is caused by parasites, scurvy by vitamin C deficiency, and cholera by bacterial infection.