What situation prompts the need for administering oxygen to a passenger?

Administering oxygen is essential in situations where a passenger is experiencing chest pains, as this can be indicative of a potential cardiac event or another serious medical issue. Oxygen therapy helps to improve oxygen saturation in the blood and can alleviate stress on the heart by ensuring that adequate oxygen is delivered to vital organs. Recognizing chest pains as a critical condition is vital because it often requires immediate medical attention, and providing supplemental oxygen can be a life-saving intervention.

In scenarios such as dehydration, exhaustion, or during turbulence, while they may cause discomfort or distress, they do not typically necessitate oxygen administration. Dehydration can usually be managed with fluids, exhaustion can often be alleviated by rest, and while turbulence can lead to anxiety or motion sickness, it does not directly affect a passenger's oxygen needs.