Question

question 4
skin cells play an important role in producing:
a viatmin a
b vitamin b
c vitamin c
d vitamin d

Explanation:

Skin cells contain a form of cholesterol. When exposed to sunlight (ultraviolet B rays), this cholesterol is converted into vitamin D. Vitamin A is mainly obtained from diet (e.g., carrots, liver). Vitamin B complex has various sources like whole grains, meat. Vitamin C is found in citrus fruits, peppers.

Answer:

D. Vitamin D