Answer: A. He wants to remind them they have fought great monsters before.
Explanation:
The sentence that contains a misplaced or dangling modifier is the one that follows:
B. Being from a small town in Wisconsin, the subway was a new experience for Matt.
All the information which appears before the comma (being from a small town in Wisconsin) seems to be related to the subway, and not to Matt, since "the subway" appears right after it. Obviously, the purpose was to use a modifier (the whole clause, in this particular case) in order to give information about Matt, and not about the subway. A better way to convey the idea originally intended would be:
Being from a small town in Wisconsin, Matt experienced the subway as something new.
It's when the Giant Peach falls and it goes into the sea. This is where the story begins.
I would say the appeals George Washington used was pathos and ethos, considering those were the ones that appealed best to the audience's emotions.
C. "a government that does not interfere with individuals pursuing wealth"