What is the primary role of vitamin C in the body?

Vitamin C plays several important roles in the body, which includes supporting immune function, acting as an antioxidant, and contributing to overall health.

Primarily, vitamin C is known for its role in boosting immune function. It helps stimulate the production and function of white blood cells, which are vital for fighting off infections and illnesses. This immune support is particularly important during periods of increased stress or illness.

Additionally, vitamin C is a potent antioxidant, meaning it helps neutralize free radicals within the body. By doing so, it protects cells from damage and can potentially reduce the risk of chronic diseases associated with oxidative stress.

While vitamin C does not directly support vision, it is involved in the health of the eyes indirectly by contributing to the health of blood vessels and connective tissue. Therefore, it can support overall wellbeing, including aspects related to vision.

Given these multifaceted roles, selecting an answer that encapsulates all the contributions of vitamin C reflects its comprehensive effects on health, making "all of the above" the correct choice. The various functions of vitamin C illustrate its importance in maintaining various physiological processes and supporting overall health.