The correct answer is:
A parody is an exaggerated imitation of something usually for comedic effect. George Orwell's Animal Farm is an exaggerated imitation of the events of the Russian Revolution and the birth of the Soviet Union. It takes animals and puts them into the place of people. The animals each represent a specific person or body of people that impacted or were impacted by the Russian Revolution and the birth of the Soviet Union.
Irony is when the opposite of what is expected happens. To ridicule someone or something is to make fun of it. Reversal is a switch.