Answer: Basically the start of a story
Explanation:
An exposition sets the story up by introducing all the characters and the setting of the story. It will also introduce the conflict of the story.
It may also provide some insight into the background of the characters
Scope of acceptable behavior within an organization, its lines of authority and accountability.
Hello. The answer to your question is........... Mr. Turner, my American history teacher, taught us about the U.S. home front during WWII.
My American history teacher describes who Mr. Turner is, making it an apposotive. Hope this helps.