_________ has three active forms: retinal, retinol and retinoic acid.

Correct option is B

The correct answer is B) Vitamin A.

Explanation:

Vitamin A exists in three active forms:

1. Retinal: Involved in vision, particularly in the retina of the eye.
2. Retinol: The alcohol form of vitamin A, stored in the liver and converted to retinal and retinoic acid in the body.
3. Retinoic acid: Involved in gene expression, growth, and immune system function.

These forms of Vitamin A play key roles in vision, cell growth, and immune function, making it essential for health.

Information Booster

• ​Vitamin B: ​B1 (Thiamine), B2 (Riboflavin), B3 (Niacin), B5 (Pantothenic acid), B6 (Pyridoxine), B7 (Biotin), B9 (Folate), B12 (Cobalamin).
• ​Vitamin D is a fat-soluble vitamin important for calcium absorption, bone health, and immune function.
• Vitamin C (ascorbic acid) is a water-soluble vitamin essential for collagen synthesis, antioxidant function, and immune support.​