Which of the following are the only two vitamins that the body can produce in sufficient quantities without the aid of food sources or supplementation?

Name: Which of the following are the only two vitamins that the body can produce in sufficient quantities without the aid of food sources or supplementation?
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Question

Quizplus · Accepted Answer

Vitamin D is produced by the skin when exposed to sunlight, and Vitamin K is produced by bacteria in the intestines.

Which of the Following Are the Only Two Vitamins That