The correct answer is Walt Whitman
He says so in his poem I Sit and Look Out. The phrase is the final line of the poem.
I would say that your answer would be A) To inform, explain, describe, compare/contrast, and problem solve. When you Google the definition of expository text, answer A best matches that description.
"The main purpose of expository text<span> is to inform or describe what the story or book is about, so when the student reads they are understanding what is being read better."</span>
Answer:Dawson I believe.
Explanation: Because the entire sentence is telling you that they left Dawson making it the main focus of the sentence.
A. Passing off the work of someone else as your own