Multiple choice

Vitamin C is

  1. ascorbic acid

  2. nicotinic acid

  3. lipoic acid

  4. aspartic acid

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A Correct answer
Explanation

Vitamin C is ascorbic acid, a water-soluble vitamin essential for collagen synthesis, wound healing, and antioxidant function. Nicotinic acid (niacin) is Vitamin B3, lipoic acid is a cofactor, and aspartic acid is an amino acid.

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