What must be demonstrated to passengers in the event of cabin depressurization?

In the event of cabin depressurization, it is essential for passengers to understand the proper use of oxygen masks. This necessity arises because when cabin pressure drops, the availability of breathable air decreases, leading to a risk of hypoxia. Demonstrating the use of oxygen masks ensures that passengers know how to quickly and effectively secure the mask to their face, ensuring they receive the oxygen needed to maintain consciousness and mitigate the effects of high altitude.

Focusing on this critical safety measure is crucial because the prompt and correct usage of oxygen masks can be lifesaving in an emergency situation. Passengers must be made aware of how to activate their masks, and how to position them properly for optimal use. This training forms a key part of pre-flight safety briefings to ensure that everyone is prepared for an unexpected drop in cabin pressure.

The other options, while related to safety, do not specifically address the immediate needs during a cabin depressurization scenario. Emergency exits are shown in relation to evacuation procedures rather than oxygen supply. Life vests are relevant for water landings, and fire extinguishers are important for onboard fire safety, but they are not primary concerns in cases of depressurization. Thus, the focus remains on the oxygen masks, making it the