In my opinion, the correct answer would be B. <span>effective because President Wilson outlines the emotional reasons for entering the war. His argument is based on the fact that many American lives have already been taken in the repeated attacks; and not only American, but the lives of so many innocent people in the world. What he basically says is that there is no other option but to take part in this war and stop the world's bully from oppressing everyone. When he says: "</span><span>We must put excited feelings away," he appeals to those very emotions.</span>
It is a metaphor because it is comparing one thing to another.
The "Nut Graph" is known as the paragraph that helps to put the story in context, provides any additional information that may be useful for the reader and that can lead to a better understanding of it.
The Nut Graph is often the third or fourth paragraph of the news story and the information that contains is always related to how the context affects the reader and the story as well.
In journalism, it is used when the writer considers that the reader will need more context in order to understand why, what, who and how it happened, without really saying it, because this answers are normally given during the first and second paragraph.