Which type of coordination involves the passing of flight plans to another facility?

The correct answer is the forwarding of flight plans, which specifically refers to the process of transmitting flight plan information from one air traffic control facility to another. This type of coordination is essential in ensuring that all relevant parties have access to a flight's information, which helps maintain situational awareness and ensures safety in the airspace.

When flight plans are forwarded, it allows the receiving facility to have up-to-date information on the aircraft's intended route, altitude, and destination. This is crucial for effective traffic management and for ensuring that the necessary clearances and instructions can be given to pilots as they progress through different airspace sectors.

In contrast, transfer of control refers to the moment when one air traffic control facility officially hands off responsibility for an aircraft to another facility. Approach coordination involves communication related to aircraft that are approaching an airport, and radar point outs are a method of sharing information about an aircraft’s position without formally handing over control. While all these options are integral to air traffic operations, they do not specifically involve the act of passing flight plan details to another facility.