Question

question 49
night blindness could be caused by which vitamin deficiency?
a vitamin c
b vitamin d
c folate (vitamin b9)
d vitamin a

Explanation:

Vitamin A is essential for maintaining good vision, especially in low - light conditions. A deficiency of vitamin A can lead to night blindness. Vitamin C is related to immune function and collagen synthesis. Vitamin D is important for calcium absorption and bone health. Folate (vitamin B9) is crucial for cell division and DNA synthesis.

Answer:

D. Vitamin A