___________ is the richest source of Vitamin-B.

Correct option is C

Cereals is the richest source of Vitamin-B. Vitamin B is a group of eight B vitamins, each with varying dietary sources. Cereals can be a good source of some B vitamins, especially if they're fortified. Fortification means adding nutrients that weren't originally present in the food. However, there are other foods that are naturally richer sources of specific B vitamins than cereals. For example:
· Meat, poultry, and fish are better sources of Vitamin B12.
· Leafy green vegetables are a better source of folate (B9).
· Legumes are a good source of folate (B9) and thiamin (B1).
While fortified cereals can be a convenient way to include B vitamins in your diet, it's ideal to have a varied diet that includes different sources of B vitamins for optimal health.