Q. Around 2000 years ago, Varanasi was a famous craft center where Shrenis were

Answer of this question "Around 2000 years ago, Varanasi was a famous craft center where Shrenis were", here are 4 choices for this question : coins that have designs punched on to the metal, Buddhist monasteries, Associations of crafts persons and merchants, Iron ploughshares used for agricultural production.
Answer Is "Associations of crafts persons and merchants".