They intended to make the poems memorable. Rhythm sticks in someone's head after it is repeated enough times. It makes it all easier to repeat and remember. They wanted the poems to be easily understood and passed along, even though it wasn't really how people used to talk. Eventually, it was a recognizable writing style and when well done enough, an admirable one.
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.
