This occurs at the Exposition Stage of the story.
Jason is being told a key piece of information that will play a central role in the story. It introduces not only Jason and Mr. Manaby, but something that will drive future events, the 5:00 policy. The act of telling Jason is not yet Rising Action, however, because it only introduces the central elements of the story. The story has not yet begun to move towards its climax.
The correct answer would be false
The correct answer is sentence (5).
A sentence fragment means that it is only a part of a sentence; it is not complete. Given that it is incomplete, the fragment, aka subordinate/dependent sentence, has to be part of a larger, independent sentence, in order to make any sense. So if you combined sentence (5) with another one, it wouldn't be a fragment anymore.
