D. Humor
Because I read the book and its very serious, it does not have humor whatsoever.
An expression designed to call something to mind without mentioning it explicitly; and indirect or passing reference.
The pigs take charge and begin to control the other animals. Napoleon uses Squealer and the dogs to stop the animals' questions about the windmill. Squealer spoke so persuasively, and the three dogs who happened to be with him growled so threateningly, that they accepted his explanation without further questions.
The answer would be A. It came from the man Jean Martinet who was a French army officer.
I feel this is a reasonably basic summary of the key elements. The best
description of why I believe this offered is " Yes, because it focuses
on the details from the beginning, the obstacles from the middle, and
the resolution from the end."