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1. Which vitamin can be synthesized in significant amounts by humans and, therefore, may NOT be essential? A. carotenoids B. retinoids C. vitamin K D. vitamin D E. vitamin E
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1. Which vitamin can be synthesized in significant amounts by humans and, therefore, may NOT be essential?

A. carotenoids
B. retinoids
C. vitamin K
D. vitamin D
E. vitamin E

User Leed
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1 Answer

3 votes

The answer is D. vitamin D

User Kiedysktos
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