(D) All of these
The Correct Answer is (C) Collagen.
Collagen is the most abundant protein in the animal world. It forms a significant component of connective tissue. Therefore, it is the most abundant protein in mammals.
Collagen is a member of a family of naturally occurring proteins. It is an essential structural protein that functions by rendering a framework to most body parts, such as skin, bones, tendons and ligaments. It also enriches the body tissues with structure, texture, toughness, and rigidity.
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