First of all, it implies that this is occurring in the future, but not extremely far like 10,000 years from now; it's a reasonable amount of time away. Second of all, because of the word "finally," we can infer that everyone in that society is equal and that the general consensus about the equality is good. Because the author uses the word "finally," it makes it seem like they've finally made it through a struggle to reach equality.
I'd have to go with D because Romeo and Juliet can't be together because their families hate each other. They are defined by their family names and if they go together one of them would share the family name of the other.
