Which of the following is an example of an allegory?

An allegory is a narrative in which characters, events, and details symbolize deeper meanings, often conveying social, political, or moral themes. "Animal Farm" by George Orwell serves as a prominent example of this literary device. In the novella, the characters and events represent the Russian Revolution and the subsequent rise of the Soviet Union. The farm and its inhabitants symbolize various figures and factions within that historical context, illustrating the struggle for power and the dangers of totalitarianism. Through this allegorical framework, Orwell critiques the corruption of revolutionary ideals and the nature of power itself.

The other options, while rich in themes and symbolism, do not primarily function as allegories. "Moby Dick" explores complex themes of revenge, obsession, and humanity's struggle against nature without being a metaphorical representation of broader societal issues. "The Great Gatsby" addresses themes of the American Dream, class, and disillusionment but does so through a straightforward narrative rather than allegorical symbolism. Similarly, "To Kill a Mockingbird" deals with racial injustice and moral growth through its characters and plot without embodying an overarching allegorical structure.