Explanation:

- Correct Answer: Option 3 - George Bernard Shaw

- George Bernard Shaw: An Irish playwright and critic, Shaw wrote "Caesar and Cleopatra" in 1898. This play is a historical comedy that explores the relationship between Julius Caesar and the young Cleopatra.

- Joy Adamson: Known for her work as a naturalist and author, particularly her book "Born Free," which is about raising a lion cub. She did not write plays nor is associated with theatre.

- Thomas Powers: He is an American author and journalist known for his writings on intelligence and national security issues. He is not a playwright.

- Ernest Hemingway: An American novelist and short story writer, known for works such as "The Old Man and the Sea" and "A Farewell to Arms". Hemingway is not known for writing plays.