Vitamin a is essential for what?
a. metabolism of carbohydrates.
b. a healthy immune system.
c. eyesight.
d. none of the above.

the answer is D. none of the above because vitamin A helps growth and development

hope i helped

i only have few minutes according to the map above, which shows religious cultural regions, what two religions are most commonly practiced in africa? a. christianity and buddhism b. buddhism and hinduism c. islam and christianity d. hinduism and islam