Which of the following terms is not one of Aristotle's critical concepts relative to tragedy?

The term "exposition" is not one of Aristotle's critical concepts relative to tragedy, as delineated in his work "Poetics." Aristotle emphasizes several key components that contribute to the structure and impact of a tragedy, including the concept of peripeteia (a sudden reversal of fortune), hubris (excessive pride or self-confidence leading to a character's downfall), and nemesis (the inevitable fate or punishment that befalls a person due to their actions).

Exposition, while important in narrative structure as it provides background information and sets the context for a story, is not specifically highlighted by Aristotle as a component unique to tragic plots. Instead, Aristotle focuses on the emotion and moral lessons conveyed through actions and character changes in a dramatic context, rather than the narrative elements like exposition that simply set the stage for a story.