In the event of an onboard offence suspected, the aircraft commander may deliver such person to the competent authorities.

• A. may deliver such person to the competent authorities
• B. may not require or authorise the assistance of other crew members
• C. may require the assistance of passengers to restrain such person
• D. may request such person to disembark

Answer: (A)

The main idea is the captain’s authority to maintain safety and security on board by handing over a suspected offender to the proper authorities. The aircraft commander is responsible for the conduct of everyone on the flight and for taking appropriate actions if a crime or serious disturbance occurs. When a suspected onboard offense is identified, the captain can arrange for the person to be delivered to competent authorities, typically coordinating with ground or local law enforcement when the opportunity presents itself—often on arrival or at a point where custody can be transferred safely.

This option is the best because it accurately reflects the captain’s power to involve authorities and to ensure the offender is handed over for proper legal handling. The other statements are less accurate in this context: the crew may indeed need to involve and request assistance from other crew members; requiring or seeking passenger restraint is not standard practice and can raise safety and legal concerns; and while disembarking a passenger can happen in some situations, the phrase here is about delivering the person to authorities, which is the formal transfer the captain is empowered to arrange.