If strict vegetarians are uninformed, for which vitamin might they be especially at risk for deficiency?

Name: If strict vegetarians are uninformed, for which vitamin might they be especially at risk for deficiency?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Vitamin B12 is primarily found in animal products, so strict vegetarians (vegans) who do not consume any animal products are at risk of vitamin B12 deficiency unless they take supplements or consume B12-fortified foods.

If Strict Vegetarians Are Uninformed, for Which Vitamin Might They