I would say C is the main idea. A and B are too specific and D is inaccurate.
Theme teaches a lesson and the the subject is the main point of the story
What people communicate is information about subjects and events, people and processes.This section draws on Bruce Bimber, Information and American Democracy: Technology in the Evolution of Political Power (New York: Cambridge University Press, 2003), especially 9–12. It can be true or false, fiction or nonfiction, believable or not. We define it broadly to encompass entertainment, news, opinion, and commentary.
Answer:
One of the central themes of Romeo & Juliet is passion, which manifests equally in love and in violence. Both are powerful and conflicting forces throughout the story, but ultimately, it's love that conquers hate. To prove this point, compare the deaths of Romeo and Juliet to those of Mercutio and Tybalt.