10. The narrator most likely includes the William Quayle anecdote at the end of the passage to:

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

Located in the last sentence: William Quayle exchanged his autograph for an acre of land. Yesterday I thought he was a thief. Today when I saw that an acre is so small, I think I blamed him wrongly. So the author mentioned Williams in order to show the vastness of prairie, making an acre of land seem insignificant, D is appropriate.