Which city is associated with the airport code BNA?

The airport code BNA is associated with Nashville, Tennessee. This code is derived from the name of Nashville's airport, which is officially known as Nashville International Airport. The letters "B" and "N" in the code relate to the word "Nashville," while the "A" indicates that it is an airport. Airport codes, especially those in the United States, often reflect the name of the city or region they serve, making them easier to remember and identify for travelers and airlines alike.

In this case, the other choices do not match the airport code BNA. The airport codes for Austin, Texas (AUS), Birmingham, Alabama (BHM), and Bismarck, North Dakota (BIS) differ from BNA, reinforcing that Nashville, Tennessee is indeed the correct association for this specific airport code.