The option that is not a characteristic of vitamins is amino acid, which is option D.
What is a vitamin?
A vitamin is any specific group of organic compounds essential in small quantities for healthy human growth, metabolism, development, and body function.
Vitamins are usually found in small quantities in plant and animal foods or sometimes can be synthesized.
A vitamin can contain saturated fat, cholesterol or fiber, however, an amino acid is a compound specific to protein molecules.
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