What is a primary function of vitamin C in the human body?

Vitamin C, also known as ascorbic acid, plays a crucial role in several vital functions within the human body, among which collagen synthesis and iron absorption are particularly important.

Collagen is an essential protein that provides structure to various tissues, including skin, cartilage, and bones. Vitamin C is a cofactor in the enzyme processes that synthesize collagen, which means that without adequate vitamin C, the body cannot effectively produce collagen, leading to issues such as scurvy, characterized by weakened connective tissues and poor wound healing.

In addition to its role in collagen synthesis, vitamin C significantly enhances the absorption of non-heme iron (the type of iron found in plant-based foods). By converting iron to a more absorbable form and chelating it, vitamin C promotes better iron uptake in the digestive tract, which is particularly beneficial for individuals who consume primarily vegetarian or vegan diets.

This multifaceted role highlights why the correct answer emphasizes vitamin C’s functions in collagen synthesis and iron absorption, providing essential support for overall health and physiological processes.