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Why are vitamins considered essential food factors for humans?

Options

  1. AThey provide energy.
  2. BThey are synthesized by the human body.
  3. CThey are abundant in animal-based foods.
  4. DHumans cannot synthesize most vitamins and must obtain them from their diet.

Correct answer

D. Humans cannot synthesize most vitamins and must obtain them from their diet.

Step-by-step solution

Vitamins are considered essential because most of them cannot be synthesized by the human body and must be obtained from the diet.

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