Answer:
A: it was a place to go to exchange goods and ideas.
Step-by-step explanation:
Back then, Rome was like America. Citizenship in Rome was sought after because there, you could buy, sell, and trade for a better deal than any other merchants. Also it was helpful if you got into trouble because the punishment would be lesser on you than another non-citizen of Rome.
Hope this answers your question. Have a great day/night!