The difference I see is exhibit(n) are items or objects and exhibition is an event in which the items are shown
The end for example cat touched the hat
I am certain your answer is 4.
To me, it makes the most sense and I think anyone else can agree.
Hope I helped, and good luck!
The theme is the message an author is trying to send, or the main idea. The author's purpose is the reason an author writes something, whether it be to inform, entertain, etc.
