Why is vitamin D necessary?
A) Vitamin D is required for calcium absorption from the small intestine.
B) Vitamin D protects the skin from UV radiation.
C) Vitamin D critical for thermoregulation.
D) Vitamin D protects the skin from pathogens.

Question

Quizplus · Accepted Answer

Vitamin D is essential for the absorption of calcium in the small intestine, which is crucial for maintaining healthy bones and teeth.

Why Is Vitamin D Necessary