Answer:A) rules for how a ringing cell phone should be handled during a movie
Explanation:The paragraph topic that is most relevant to the overall thesis of the essay (How to Be Polite in a Movie Theater) and that could be integrated into the whole paper most easily would be rules for how a ringing cell phone should be handled during a movie. While the other answer choices are indeed "movie theater-related," they are not primarily concerned with proper manners.
I wasn't sure myself, but this seems like the only answer that sounds correct... I really hope this helps you! (If you would like an explanation, I can comment it below) xx