Which airports are operated by the City of Chicago's Department of Aviation?

The correct answer identifies the airports operated by the City of Chicago's Department of Aviation, which are Chicago O'Hare and Chicago Midway. These two airports are key air traffic hubs within the United States and manage substantial passenger volumes and flights both domestically and internationally.

O'Hare International Airport is one of the busiest airports in the world, renowned for its extensive connectivity and modern facilities. Chicago Midway serves as another significant airport in the city, catering primarily to domestic flights and being a base for several low-cost carriers. The City of Chicago owns and operates these airports, making them central to the city's aviation infrastructure.

In contrast, the other options mention airports that are not operated by the City of Chicago. Los Angeles International and San Francisco International airports are managed by the Los Angeles World Airports, while Newark Liberty and Boston Logan are controlled by their respective metropolitan authorities. Atlanta Hartsfield and Orlando International are also operated by different authorities specific to their regions. This distinction clarifies why option B is the correct choice.