How is emergency oxygen provided in the EJet?

Emergency oxygen in the EJet is provided through drop-down masks in the passenger cabin. This system is designed for quick deployment during an emergency situation, ensuring that passengers have immediate access to oxygen in the event of cabin depressurization or similar emergencies. The masks are typically stored in compartments above the seats and automatically drop down when activated, making them readily available without requiring passengers to search for them. Utilizing drop-down masks allows for efficient distribution of oxygen to multiple passengers simultaneously, enhancing safety and response time in critical situations.

The other options, while they might play a role in aviation safety, do not provide a means for emergency oxygen in the specific context of the EJet. Portable oxygen tanks and a central cabin system may be used for specific medical needs or to support crew members but are not the primary method for every passenger in an emergency. Passenger life vests are important for flotation in water landings but do not serve any purpose related to oxygen supply.