Which sin categorizes Master Adam in Dante's Inferno?

Master Adam is categorized under the sin of fraud in Dante's Inferno, specifically within the Eighth Circle of Hell, known as Malebolge. He represents the fraudulent act of deceit through his role as an alchemist and a falsifier. In the narrative, he is punished for his sins related to the forgery of money and the manipulation of wealth, which embody themes of dishonesty and betrayal.

This classification highlights the nature of his transgression, as fraud undermines trust and integrity in society, which resonates with the overall moral structure of Dante's work. Dante places great emphasis on the severity of fraud, reflecting its impact on human relationships and society as a whole. In this context, Master Adam serves as a representation of those who exploit others for personal gain, reinforcing the notion that such deceit is to be severely punished in the afterlife.

The other options such as violence and greed do not accurately reflect Adam’s specific actions. Rather, they pertain to different circles within Hell and to different types of sins. Thus, the categorization of Master Adam aligns with the theme of fraud, showcasing how his punishment is justly served for his misdeeds.