Which of the following vitamin is known as riboflavin?

Vitamin-B₂ is known as riboflavin.
Riboflavin, also known as vitamin B₂, is a vitamin found in food and sold as a dietary supplement. It is essential to the formation of two major coenzymes, flavin mononucleotide and flavin adenine dinucleotide.
These coenzymes are involved in energy metabolism, cellular respiration, and antibody production, as well as normal growth and development.