Answer:
Option A. The excerpt's main conflict as it is described is of character vs. self.
Step-by-step explanation:
In literature conflicts are key elements of every story. One of the most common conflict's types is the one between character vs/ self. this conflict is between the character and its internal person. In this case, as it is shown in the excerpt from "Sophistication", the main conflict is internal to the character of George Willard, he is dealing with his own thoughts and experiences and not with someone else.