Answer:
Option C , vitamin B12
Explanation:
The major source of B12 vitamin is are fish, eggs, milk, and milk products, meat, poultry etc. Hence, if a person starts to take completely vegan diet he/she will not get vitamin B12.
Rest all vitamins can be obtained from vegan diet
Vitamin A can be obtained from - Orange & yellow vegetables, fruits, broccoli, spinach, and dark green, leafy vegetables.
vitamin B3 - Can be obtained from green leafy vegetables, coffee, and tea
Vitamin C - Can be obtained from kiwi, lemon, guava, grapefruit, and vegetables
Vitamin E - Can be obtained from nuts, such as almonds, peanuts and hazelnuts, and vegetable
