Final answer:
The correct term for the male and female fittings used to replenish SCBA breathing air cylinders in emergencies is the 'Rapid intervention crew/company universal air connection'.
Step-by-step explanation:
The male fitting affixed to the Self-Contained Breathing Apparatus (SCBA), and the female fitting affixed to the filling hose for the purpose of emergency replenishment of breathing air to an SCBA breathing air cylinder is referred to as: a) Rapid intervention crew/company universal air connection. This system is essential for ensuring that firefighters and rescue personnel have a continuous supply of breathing air in emergency situations. Much like how scuba divers use compressed air to breathe underwater, firefighters rely on SCBA units to breathe in smoke-filled or toxic environments. The development of this technology has been influenced by advances in aerospace, and it is part of the crucial equipment used to protect those who put themselves in harm's way to save others.