He was not surprised because he was already going insane. Since he was hallucinating that the raven was spouting words at him. He was already ill to begin with so it was not a surprise he thought the raven spoke.
It uses logical examples and explanations to examine a topic in an organized way.
An expository essay is an essay in which the author makes a statement about a topic and then backs up his/her reasoning with specific examples and explanations. The examples and explanations should be logical and organized in a way that makes it easy for the reader to see how the author builds support for his topic.
The other options apply to other forms of literature. A play uses dramatic elements. A poem uses poetic techniques. A story uses narrative techniques.
it means a photo can say so much such as telling a story