What city is represented by the airport code DFW?

The airport code DFW represents Dallas/Fort Worth International Airport, which is located in Dallas, Texas. This airport is one of the largest and busiest in the United States, serving as a major hub for American Airlines. Its designation reflects the combined metropolitan area of Dallas and Fort Worth, with "DFW" incorporating the initials of both cities.

In this case, the other options related to different cities and their respective airports, which do not share the same airport code as DFW. Therefore, DFW is unmistakably linked to Dallas, affirming A as the correct answer.