The problem is that there is more than one choice that can be defended.
I don't think there is any statement that shows he believes the youth are cowardly. Not B
He doesn't imply that other nations welcome the youth being addressed. It's really not A.
D is really hard to get rid of. It is not stated directly, but I think it is implied. If you were writing an essay, you could easily argue that the speaker is implying that he believes that most countries are not as good as his.
JUST A DROP OF WATER is powerful and timely and it should be on all middle school lists. Jake and Sam are two best friends whose lives and friendship are turned upside down as a direct result of the horrific events of 9/11. It's the story about friendship, doing what's right, and not giving in to anger and fear.