Identifying Allegory in Literature

Allegory is a literary device that uses characters, events, and narratives to symbolize abstract ideas and principles. It often conveys moral, social, or political messages through layered meanings. A well-known example of an allegory is George Orwell's Animal Farm, which critiques totalitarianism through the story of farm animals. In this context, consider the following question:

Which of the following best exemplifies the use of allegory in literature?