Either/or Fallacy:
Reducing an argument or an issue or two polar opposites and ignoring possible alternatives.


Example:
"either you're with us, or against us.."
-Beauty and the Beast
(Gaston)


Explanation:
The purpose of this is to show that there is no other choice. It shows authority and power which is what the creator of "The Beauty and the Beast" wanted Gaston to seem like. It adds to the suspense, be the fact that you must pick one or the other. It also serves as the purpose that Gaston is down to business, which helps the viewer understand the personality of the character.