B. To create tension between the characters
I believe the bolded pronoun would be MY because it it is proper and before the noun
He felt like a completely new person and what he was holding could change him, change his future. It was his current reality but so different from the rest of his life, he liked being self sufficient but it was also somewhat scary because it was so new
The feud between the Montagues and the Capulets is the cause of Romeo and Juliet's deaths, and probably their romance as well. If there were no feud, the two families would have moved in the same circles, and Romeo and Juliet would have known each other all their lives.