What does the term inadmissible passenger pertain to?

The term "inadmissible passenger" specifically pertains to passengers who do not meet the necessary travel requirements for their journey. This can include not having the required documentation, visas, or not fulfilling health or safety regulations set by the destination country. Meeting these travel requirements is critical for a passenger to be allowed to board an aircraft and enter a new country, making this option the most accurate choice.

Other options, while related to travel, do not align with the definition of "inadmissible passenger." For example, a passenger who loses their boarding pass would likely face challenges boarding the aircraft, but their status as a passenger is not defined by being inadmissible in the official sense. Similarly, having excess luggage is an issue concerning baggage policies and fees but does not affect a passenger's ability to travel based on legal or safety requirements. Changing flight details may alter travel plans but does not inherently make a passenger inadmissible as long as they comply with the travel requirements of the airline and destination.