What does the abbreviation ORD represent?

The abbreviation ORD stands for O'Hare International Airport, which is one of the busiest airports in the world and serves as a major hub for both domestic and international flights. The use of three-letter airport codes is standardized by the International Air Transport Association (IATA) to simplify and ensure clarity in aviation communication. In this instance, the "O" corresponds to "O'Hare," which is named after World War II aviator Edward "Butch" O'Hare, and the "RD" is derived from the airport's former name, Orchard Field.

Understanding airport codes is essential for navigation, scheduling, and logistics within the airline and travel industries. The other options refer to different entities or locations that do not relate to the airport in question, making them inaccurate choices in this context.