Who wrote "The Great Gatsby"?

"The Great Gatsby" was written by F. Scott Fitzgerald, making him the correct answer. This novel, published in 1925, is considered one of the great American classics and is a poignant commentary on the American Dream and the Jazz Age. Fitzgerald's masterful use of language and his ability to capture the spirit of the time are key elements that contribute to the book's lasting impact and importance in American literature.

The other authors listed, while notable figures in their own right—such as Ernest Hemingway, known for his sparse prose and themes of courage and loss; John Steinbeck, who focused on social issues and the plight of the American working class; and Mark Twain, recognized for his humor and sharp social critique—did not write "The Great Gatsby." Each has their own distinct contributions to literature, but F. Scott Fitzgerald is the author behind this particular iconic work.