Final answer:
The MBU-12P oxygen mask uses snap fasteners to attach the individual harness adjustment straps, ensuring a quick and secure fit necessary for aviation safety.
Step-by-step explanation:
The individual harness adjustment straps are attached to the MBU-12P oxygen mask using snap fasteners. This type of fastening allows for quick and secure fitting, which is essential in aviation environments where the mask may need to be quickly donned or removed. The use of snap fasteners also ensures that the mask can be adjusted to fit securely against the face, which is crucial for maintaining an airtight seal and ensuring the delivery of oxygen in high-altitude or emergency situations.