If a passenger is acting listless and oxygen masks deploy, what should be your first action?

The correct first action in this scenario is to immediately take oxygen from the nearest oxygen mask. When oxygen masks deploy, it is a critical response to a potential drop in cabin pressure or a lack of available oxygen. The priority in such situations is to ensure that both you and the affected passenger receive the necessary oxygen. By taking the oxygen mask first, you safeguard your own well-being, enabling you to effectively assist others.

Responding to the immediate physical needs is essential, as acting quickly can stabilize your situation and allow you to later focus on checking on the passenger's health or coordinating further actions, such as notifying the flight deck or calling for medical assistance. In emergency situations, personal preparedness is crucial to effectively help those in distress.