Which vitamin is associated with healthy eyesight, growth, bone development, and healing infections?

• A. Vitamin A
• B. Vitamin C
• C. Vitamin D
• D. Vitamin E

Answer: (A)

Vitamin A supports healthy eyesight, growth, bone development, and healing infections because it is essential for maintaining the health of epithelial tissues, including the retina. In the eye, retinal pigments rely on vitamin A to detect light and adapt to low-light conditions, which ties directly to good vision. It also supports normal growth and development, including bones, by helping cells differentiate properly and maintain mucosal surfaces that defend against infection. Its role in immune function and wound healing comes from preserving the integrity of barriers like the skin and mucous membranes and supporting the immune response. Deficiency can lead to night blindness and a higher susceptibility to infections, highlighting its link to both vision and healing processes. Other vitamins have different primary roles—for example, vitamin C helps with collagen and wound healing, vitamin D supports bone mineralization, and vitamin E acts mainly as an antioxidant—so they don’t align as closely with all the functions described.