Which of the following is NOT part of advanced individual training?

Advanced individual training focuses on specialized skills that enhance a Marine's capabilities and preparation for specific roles within the Marine Corps. The options related to advanced individual training include Basic Airborne, Military Free-fall Parachutist, and Marine Combatant Diver, which are all specialized programs designed to develop advanced skills in areas such as parachuting and diving.

These training programs require additional qualifications and intensive training beyond the basic training that all Marines undergo. In contrast, route reporting does not fall under advanced individual training. Instead, it is typically considered a fundamental skill that is part of the overall Marine Corps training curriculum, focusing on how to report and manage routes during operations rather than specialized skill development. Thus, D is the correct choice as it does not represent a specialized advanced training program.