What is another name for Vitamin A?

• A. Retinyl phosphate
• B. Retinal
• C. Retinol palmitate
• D. Retinol

Answer: (D)

Vitamin A refers to a group of related compounds called retinoids that support vision, immunity, and growth. The form most commonly identified as the nutrient itself is retinol, the alcohol form that circulates in the blood and is used as the primary dietary form measured as retinol activity equivalents. Other retinoids like retinal (aldehyde) and retinoic acid (acid) have specific roles, such as in vision and gene regulation, while retinyl palmitate is a storage ester. Because the question asks for another name for Vitamin A, retinol is the best answer since it is the standard form associated with the vitamin in nutrition context.