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Which city does the airport code STL represent?

  1. Salt Lake City, UT

  2. San Antonio, TX

  3. St. Louis, MO

  4. Sacramento, CA

The correct answer is: Salt Lake City, UT

The airport code STL represents St. Louis, MO. Airport codes are typically derived from the name of the city or its airport and follow a three-letter format. In this case, STL is an abbreviation for St. Louis, with the "ST" reflecting the city's name, and the "L" representing Louis. Recognizing city codes often involves familiarity with specific airports and their associated cities, which helps in identifying the correct code accurately. The other options listed correspond to different cities, which have their own unique airport codes. For instance, Salt Lake City has the code SLC, San Antonio is coded as SAT, and Sacramento is identified as SMF. Understanding these distinctions aids in accurately associating airport codes with their respective cities.