I enjoyed reading that excerpt, I learned something new today! Alright, let's work through this: as you were reading this text, how did the author introduce information? Each sentence is building off of the next, but think about how they're building off of each other.
Also, it might help to eliminate the wrong answers--is anything being compared or contrasted with something else? Is space being discussed?
For this answer it will be D. Because throughout the text clearly the professor states how he gets his information through the college therefore it informs the reader that the expert give us a little hints of information throughout the text.
Answer:
THE ANSWER IS to share impressions regarding the Iroquois Confederacy from a variety of notable historians
Explanation: I TOOK THE TEST