Answer:
The body requires sun to make vitamin D (option b)
Explanation:
Vitamin D is a nutrient belonging to the liposoluble vitamins —together with vitamins A, E and K— that participates mainly in the metabolism and homeostasis of calcium and phosphorus, among other functions.
Dehydrocholesterol is the chemical compound from which vitamin D₃ —cholecalciferol— is synthesized, which occurs in the skin thanks to the effect of sunlight.
Cholecalciferol is inactive, and as it passes through the liver and kidney it is transformed into its active equivalents, calcidiol and calcitriol, respectively.
