It's C because Mr. Kraler has a character vs character conflict and a character vs self conflict. Mr. Kraler faces an employee possibly blackmailing him and he faces the consequences on his actions towards him, which can result as him dealing with the consequence entirely. Sorry if it seems confusing! Ask me if it seems weird.
Introduction strategies serve as a gateway to what the passage or article or story is about. This particular passage uses the strategy of introduction by stating an interesting fact or statistic by giving mathematical ideas and numerical statements.