Which airports are owned and operated by the City of Chicago?

The City of Chicago owns and operates both Chicago O'Hare International Airport and Chicago Midway International Airport. This dual ownership reflects the city's commitment to managing and providing airport services to accommodate the large volume of air traffic in the region.

O'Hare International Airport is one of the busiest airports in the world and serves as a major hub for domestic and international flights, while Midway International Airport primarily focuses on domestic travel. The operations of both airports are essential for the city’s economy, providing significant jobs and facilitating travel and trade.

Other airports mentioned in the options, such as Chicago Rockford Airport, Kennedy Airport, and LaGuardia Airport, are not owned or operated by the City of Chicago, which clarifies why those options are not applicable in this context. Hence, option B is the correct choice as it accurately identifies the airports that are under the city's ownership and management.