It can help you keep track of your fitness.
Just macroanatomy right?
I would say A, as the only answer.
Hope that helps,
Answer: Vitamin B12
A vegan diet has the potential to be deficient in Vitamin B12.
Iron
A vegan diet has the potential to be deficient in iron.
Zinc
Zinc is a potential deficiency in a vegan diet.
Explanation: im in school for heath