Which of the following functions is associated with Vitamin A?

Vitamin A plays a crucial role in supporting immune function. It is essential for the maintenance of the health of the skin and mucosal cells, which act as barriers against pathogens. Additionally, Vitamin A is involved in the regulation of various immune responses, such as the activation of T lymphocytes and enhancement of antibody responses, both critical for an effective immune system. This vitamin is necessary for the proper functioning of the immune system, helping the body to recognize and respond to infections effectively.

While the other functions mentioned in the choices are significant, they are not primarily associated with Vitamin A. For instance, blood pressure regulation is more closely linked to nutrients like potassium and magnesium, while bone mineralization is primarily influenced by Vitamin D and calcium. Antioxidant synthesis can involve various vitamins and minerals, but Vitamin C and E are more recognized for their antioxidant properties. Thus, the role of Vitamin A in immune function distinctly highlights its importance in maintaining overall health.