Why the heck do teachers put that type of question but it’s Obama and Biden :)
According to Nancy Duarte's TedX Talk, every presentation should end with a call to action. The world must be described as a new bliss by showing the audience why they should adopt or accept your ideas. It is important because the presentation will be effective, impactful and well-remembered if it was ended in a poetic and dramatic way.
I believe the correct answer from the choices listed above is the second option. The part of a plot structure introduces the characters and setting would be exposition. It <span>is the insertion of important background information within a story</span>
Hope this answers the question. Have a nice day.