Which maintenance is completed after the last flight to identify potential issues?

The correct choice is the post-flight inspection, which is conducted after the last flight of an aircraft or vehicle. This inspection aims to identify any potential issues that may have arisen during the flight. It involves a thorough check of the aircraft's systems, components, and overall condition to ensure that everything is functioning as intended and to pinpoint any defects or wear that could affect future operations. Addressing these issues early is paramount to ensuring safety and reliability for subsequent flights.

Pre-flight inspections, in contrast, are performed before a flight to ensure that the aircraft is safe and ready for takeoff. Thru-flight inspections take place during a flight to monitor performance and conditions, ensuring the aircraft continues to operate safely throughout its journey. Preventive Maintenance Service focuses on regular maintenance tasks performed at scheduled intervals to prevent issues before they arise, rather than addressing problems specific to the recent operation of the aircraft. Each of these other types of inspections serves a different purpose in the overall maintenance plan for an aircraft.