Concept: Catharsis refers to the emotional release or purgation felt by the audience after a tragedy.Explanation:Anagnorisis is a character’s discovery of truth.A tragic flaw is a hero’s personal defect that leads to downfall.Catharsis is the release of pity and fear in the audience.A catastrophe is the final disastrous outcome.Therefore, the correct answer is catharsis.Answer: C. a catharsis