Disagree, there will always be Hatred and Intolerance in the word, no matter how hard we all try, it is inevitable. It's simply human nature.
I think it's A. It is definally not the climax as this happens when Beowulf kills the monster. It's not the resolution either as it is the first part of the text. Also, exposition seems a little unrelated.
The answer is a. An appositive is a noun or noun phrase that renames another noun right beside it. "a city on the Fox River" is renaming Aurora. Therefore, the right answer is a. Good luck.