I believe the correct answer is - Why do the characters feel the way they feel?
By asking this question, you will have to analyze the text in order to see what caused these characters to start having these feelings they are currently having. The other options do not ask such informed questions or demand an in-depth analysis.
Q: What is the valley of ashes in the great Gatsby
<em>Whoaaa! You're reading The Great Gatsby? That's literally the best book I've read in English class! You should definitely watch the movie when you have time because 1. It helped me out on my test and 2. It was so good!</em>
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<em>Alright, enough of the jibber jabbering... let me answer your question. </em>
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<em>The Valley of Ashes is a farm where ashes grow like wheat into hills, ridges, and even gardens. It's very desolate and empty, marking the intersection of the city with the suburbs. It's between the East and West Egg and is created by the dumping of industrial waste. It symbolizes the moral and social decay, as well as the carefree pursuit of wealth, since the rich do as they please and don't care about anything else besides their own pleasure.</em>
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<em>Hope this helped you out!</em>
<em>-Namira</em>
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Roosevelt used repetition in his Pearl Harbor Address in order to emphasize the threat posed by Japan. By repeating the words "Last night Japanese forces attacked..." several times, he was trying to intensify and stress the gravity and severity of the threat posed by Japan, so Congress would make the declaration of war and the American people would endorse such declaration.
Is there more to this question? If not I would use a word like Persuade? listeners. Or Engage? listeners.