What should you do if a young gentleman is walking down the jetway without any identification?

Notifying the Ground Operations Supervisor is the most appropriate action in this scenario because they have the authority and responsibility to handle security and safety concerns within the airport environment. When someone is traveling without identification, it raises potential security issues that require immediate attention from personnel trained to respond to such situations.

The Ground Operations Supervisor can take the necessary steps to assess the situation further, which may involve identifying the individual and determining if there is a legitimate reason for their lack of identification. This approach ensures compliance with airport policies and maintains the safety and security of all passengers and staff.

Other options, such as ignoring the situation, can lead to security vulnerabilities or potential safety risks. While asking the gentleman for his identification or contacting airport security may seem like viable options, they either do not utilize the immediate chain of command or might escalate the situation unnecessarily without proper authorization or protocol. Thus, notifying the Ground Operations Supervisor is the most effective and responsible action in this context.