How would you define baggage in the context of air travel?

In the context of air travel, baggage is best defined as articles necessary for passenger convenience. This encompasses the personal items and possessions that passengers take with them on their journey, such as clothing, toiletries, and other personal effects. Baggage serves a functional purpose, allowing passengers to have the essentials they need during travel, whether in their carry-on or checked luggage.

The other options do not accurately reflect the definition of baggage. Tickets and travel documents are essential for travel but do not fall under the category of baggage. Passengers themselves are individuals traveling on the flight and are distinct from the concept of baggage. Similarly, crew members operating the flight are responsible for the safe and efficient running of the aircraft and are not considered baggage. Thus, option A captures the true essence of baggage in air travel.