The purpose of this given dialogue is to describe the setting.
Answer: Option B
Step-by-step explanation:
The opening act and the first scene consists of a brawl between Montague and Capulet. This is one of the many brawls which have been going on for a long time between the two houses as that has included some major rivalries in the past too.
This makes the setting of the play as the brawl between the two houses is the setting of the play and how Romeo and Juliet’s story proceeds and concludes accordingly.