OAK is the airport code for which city?

The airport code OAK corresponds to Oakland, California. This three-letter code is assigned by the International Air Transport Association (IATA) to represent airports around the world, and each code is unique to a specific location. In this case, OAK is a well-known abbreviation for Oakland International Airport, which serves the San Francisco Bay Area.

The other options represent different airport codes and cities. For instance, Fort Myers, FL is associated with the airport code RSW, San Diego, CA is represented by SAN, and Denver, CO uses the code DEN. Since OAK directly refers to Oakland's airport, it is the correct answer in this context. Understanding airport codes is essential for anyone in the airline industry, as they facilitate communication and identification of various locations within air travel operations.