The correct answer is B) peripeteia and anagnorisis.
According to Aristotle, the two elements of Greek tragedy that occur at the climax are peripeteia and peripeteia and anagnorisis
According to Greek philosopher Aristotle, peripetia in Greek tragedy is the turning point of the story. The changing of the circumstances in the story. That is what Aristotle used in his "Poetics." Anagnorisis, on the other side, is the moment in the story when the main character discovers something important that affects the story. It is when the hero of the story realizes something critical.