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The precursor of vitamin D is:
B.Arachidonic acid

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A precursor is a compound that participates in a chemical reaction that produces another compound. It often refers more specially to a chemical compound preceding another in a metabolic pathway.

Complete step by step answer:
-Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis.
-Cholesterol serves as a precursor for the biosynthesis of steroid hormone, bile acid and vitamin D.
-It is the principal sterol synthesized by all animals. In vertebrates, hepatic cells typically produce the greatest amounts.
-The chemical formula for cholesterol is \[{C_{27}}{H_{46}}O.\]
-The cholesterol and other facts are carried in the bloodstream as spherical particles known as lipoproteins.

Hence, option A is correct.

Vitamin D deficiency can lead to a loss of bone density, which can contribute to osteoporosis and fractures (broken bones). In children, it can cause rickets. Rickets is a rare disease that causes the bones to become soft and bend.
Last updated date: 23rd Sep 2023
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