Concept:Tragedy, in classical literary theory, is defined by the emotions of pity and terror.
Explanation:The tragic character is usually a person of noble birth who falls from greatness because of a tragic flaw, or hamartia.
His or her downfall creates deep emotions in the audience.
First, pity arises because the hero's suffering is harsher than his or her fault deserves.
Second, terror arises because the audience sees that such misfortune could happen to any human being.
According to Aristotle in his Poetics, tragedy should arouse pity and terror so that the audience is cleansed through catharsis.
Terror here means fear, which is the emotion Aristotle originally described.
Frustration and horror do not fit this classical definition.
Sympathy is too close to pity and does not add the element of fear.
Hence, the correct word to complete the idea is terror.
Answer:The correct option is B. terror.