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What city does the airport code PDX represent?

  1. Eugene, OR

  2. Medford, OR

  3. Newark, NJ

  4. Portland, OR

The correct answer is: Eugene, OR

The airport code PDX represents Portland, Oregon. Portland International Airport is the major airport serving the city and is a key hub for both domestic and international flights. The airport's code, PDX, is derived from the first letters of the city's name and fits into the standardized three-letter airport identification system used globally. Eugene, Medford, and Newark correspond to different airport codes that do not match PDX, reinforcing the correctness of the association between PDX and Portland.