What is the function of collagen in the body?

Collagen is a critical protein in the body primarily known for providing structural support. It is the most abundant protein in mammals, comprising a significant portion of connective tissues, including skin, tendons, ligaments, and cartilage. Its role is to create a framework that gives strength and elasticity to these tissues, enabling them to withstand tensile forces. This structural function is vital not only for the integrity of individual tissues but also for the overall stability and functionality of organs and systems within the body.

While other options presented may relate to various physiological functions, they do not accurately describe collagen's primary role. Energy production relates more to cellular metabolism, hormonal balance involves the regulation of hormones in the body, and nutrient transport is primarily the role of capacities like hemoglobin for oxygen and other transport proteins. Therefore, identifying collagen's role as structural support accurately reflects its essential functions in maintaining the body's architecture and resilience.