Final answer:
The responsibility for helping guests pass at the airport on the day of travel lies primarily with the ground staff.
Step-by-step explanation:
The responsibility for helping guests pass at the airport on the day of travel lies primarily with the ground staff. Ground staff members are responsible for tasks such as check-in, baggage handling, and assisting passengers with boarding the aircraft. They ensure that passengers have the necessary documents and provide support throughout the travel process. While flight attendants play an important role during the flight, their primary responsibilities are focused on in-flight services and passenger safety rather than assisting with pre-boarding procedures.