Which action helps prevent a security breach during boarding and deplaning?

• A. Maintain controlled access, verify identity when required, monitor suspicious behavior, and ensure crew aware of exit row assignments and passengers.
• B. Allow anyone to board if signed in by a passenger.
• C. Keep doors open to speed boarding.
• D. Only check baggage for weight; ignore passenger behavior.

Answer: (A)

During boarding and deplaning, the priority is preventing unauthorized access and spotting potential threats as people move in and out of the aircraft. Maintaining controlled access means you only allow authorized individuals onto the aircraft, and verifying identity when required ensures those people truly are who they say they are. Monitoring suspicious behavior gives crew a chance to intervene early if someone acts in a way that could indicate a security risk. Keeping the crew informed about exit row assignments and the passengers seated there helps ensure safety procedures are understood and that those seats aren’t misused or overlooked during security checks. All of this together creates multiple safeguards at a moment when a lot of people and activity converge near the doors.

By contrast, letting anyone board if signed in by a passenger bypasses essential identity and authorization controls; keeping doors open to speed boarding creates a clear opportunity for unauthorized access and interference; and only checking baggage for weight while ignoring passenger behavior misses important security indicators and can conceal threats.