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Which concept involves higher personnel costs at airports?

  1. Sterile Concourse

  2. Baggage Claim

  3. Sterile Boarding Area

  4. Last Departure Gate Screening

The correct answer is: Last Departure Gate Screening

Last Departure Gate Screening involves higher personnel costs at airports because this process requires additional personnel to screen passengers and baggage at the last departure gate, which tends to be the busiest area of the airport. Sterile Concourse, Baggage Claim, and Sterile Boarding Area do not typically require additional personnel and therefore do not involve higher personnel costs.