Which playwright authored "The Cherry Orchard"?

"The Cherry Orchard" is authored by Anton Chekhov, a prominent Russian playwright and short story writer known for his significant contributions to dramatic literature. This play, completed in 1903, is considered one of Chekhov's major works and captures themes of social change, nostalgia, and the passage of time. Chekhov's unique approach to character development and dialogue is evident in this play, where he blends humor and tragedy to portray the lives and struggles of its characters as they face the loss of their ancestral estate.

The other playwrights mentioned have their own distinct bodies of work, but they did not write "The Cherry Orchard." Euripides is known for his ancient Greek tragedies, William Butler Yeats was primarily a poet and playwright in the 20th century, and William Carlos Williams was also a poet known for his innovative use of language in poetry rather than in playwriting. Therefore, Anton Chekhov is the correct answer as he is indeed the author of this important and well-regarded play.