The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Diversity of Population Rome's central location attracted immigrants and traders from all parts of the ancient Mediterranean world.
Those above-mentioned words are correct because they represent the meaning of the explanation attached.
Diversity - many different kinds of people or things.
Immigrants - people who enter a country.
Ancient - very old.
So yes, the central locations and benefits of large cities attracted many immigrants that were looking for better trade deals or better opportunities to improve their living conditions. Different locations throughout the ancient Mediterranean grew due to this new exchange of trade, ideas, cultures, and languages.