In which work does the character Boo Radley appear?

Boo Radley is a central character in Harper Lee's novel "To Kill a Mockingbird." The story is set in the racially charged atmosphere of the American South during the 1930s and revolves around the Finch family, particularly the children, Scout and Jem. Boo is initially perceived as a mysterious and reclusive figure, shrouded in local myths and feared by the neighborhood children. However, as the narrative unfolds, Boo emerges as a symbol of kindness and understanding, ultimately playing a crucial role in the story's climax. His character provides commentary on themes such as empathy, human dignity, and the moral growth of the children as they confront their prejudices and learn about the complexity of human nature.

The other works mentioned in the options do not feature the character Boo Radley. "The Great Gatsby" focuses on Jay Gatsby and his pursuit of the American Dream, "1984" revolves around a dystopian society under constant surveillance with characters like Winston Smith, and "The Catcher in the Rye" explores themes of teenage angst through Holden Caulfield. Each of these works addresses different themes and character arcs, making them distinct from the narrative surrounding Boo Radley in Lee's novel.