What is the full name of the great American short story writer O’Henry?
- Walt Whitman
- William Sydney Porter
- Marjorie Kinnan Rawlings
- Mark Twain
Answer: William Sydney Porter
Explanation: William Sydney Porter (September 11, 1862 – June 5, 1910), better known by his pen name O. Henry, was an American short story writer. His stories are known for their surprise endings.