Question

A baby is exposed to sunlight in the morning. This is done to produce in the body.
A. Vitamin A
B. Vitamin B
C. Vitamin D
D. Vitamin K

Answer 1

Vitamins are the micronutrients that are required for the body and they are essential for various metabolic activities in the body, where some are naturally produced inside the body and some should take by diet, and this vitamin is classified based on solubility to water-soluble and lipid-soluble vitamin.

Complete answer:
-In humans the cholesterol which is present beneath the skin helps to provide vitamin D3 which is the most active form of D vitamins, which is called calcitriol.
-And for the conversion of cholesterol to D3, it utilizes the sunlight which produces during the early mornings of the day.
-The UV radiations that are present in the sunlight convert the cholesterol present beneath the epidermis to cholecalciferol, and this is transferred to the liver.
-In the liver, the cholecalciferol is converted to calcidiol and it is carried to the kidneys, wherein the kidneys Calcidiol is converted to calcitriol which is the active form of vitamin D and it is called as vitamin D3.
-Vitamin D plays a very important role in the metabolism of calcium and phosphorus in the body, where these elements are very important to form the strong bones in the body.
-Apart from strengthening the bone, it also has an active role in immunity to fight against the diseases, and the deficiency of Vitamin D results in conditions such as Rickets in children and osteomalacia in the adults.
So the correct option is D.

Note: Sunlight has UV radiations, where the early morning sunlight helps to convert the cholesterol under the skin to an active form of vitamin D, which is D3 called calcitriol, and this conversion takes place beneath the skin and liver and finally in the kidney.