B: surrendering personal rights.
The answer is D. Nearing the end, Romeo hears that Juliet is dead and so he goes to buy poison from this guy, and after the "funeral", he sneaks into the tomb and cries and stares, not knowing that she had taken something to make it seem like she is dead. When she wakes up, he had already drank the poison and she, being devastated, grabs his knife and stabs herself in the chest.
Comedic Relief
Capulet calls for a sword, but Lady Capulet's lines 'offer' him a crutch instead. This is used to show how old and incapable Capulet would be in a street brawl with much younger and stronger fighters. Capulet refers to Montague 'flourishing his blade in spite' of him, which shows that Montague is not taking part in the actual fight either, just waving his sword around. This shows that the head of both houses are not actually effectual within the fight, but encourage its continuation regardless.