Final answer:
The instruction given by airlines before takeoff regarding the use of the oxygen masks in the case of lost air pressure in the cabin is an example of safety protocols or emergency procedures.
Step-by-step explanation:
The instruction given by airlines before takeoff regarding the use of the oxygen masks in the case of lost air pressure in the cabin is an example of safety protocols or emergency procedures. These protocols are put in place to ensure the safety and well-being of passengers in case of an emergency situation.