I know the main one (the one that is used today) is Hinduism
Souks are basically commercial areas. To be more specific, souks are actually market places. The correct option among all the options that are given in the question is the third option or option "C". It is also commonly known as Souq. I hope that this is the answer you were looking for and it has helped you.
I think it would be c because an archipelago is a group of islands