Someone who is a strict vegetarian may be at serious risk for deficiency.
a. vitamin b6
b. folate
b. vitamin b12
d. niacin

Respuesta :

The answer is vitamin b12.
Hello There!

Being a vegetarian, i'd know the answer is C. Vitamin B12
That vitamin is usually found in meat products only.

Hope This Helps You!
Good Luck :) 

- Hannah ❤