Answer:
c
Step-by-step explanation:
Tybalt comes to the party planning to kill Romeo for wanting to elope with Juliet. Romeo sees that, through his threats, Tybalt is wanting Romeo to become angry and strike first which would cause Romeo to take the blame. Therefore, Romeo ignores Tybalt's threats, but Mercutio does not realize his intentions and charge which makes Tybalt instinctually stab him. Which means Tybalt would not have even been there if it weren't for Romeo.