Answer: The right answer is the C) After Mercutio's death, Romeo expresses intense anger toward Tybalt.
Explanation: Just to elaborate a little on the answer, it can be added that, rather than showing guilt (option D), gentleness (option A) or a discourse on nonviolence (option B), these lines unquestionably show rage and a desire for revenge. Romeo exclaims that how it is possible that Mercutio is dead and Tybalt is alive and victorious, and, leaving behind all kindness and consideration, he is now willing and ready to fight against him, so he, or both of them, can join Mercutio's soul, which hovers above them, on its way to heaven.
