Which of the following statements correctly describes the deployment of a high-pressure gaseous emergency oxygen system?

The deployment of a high-pressure gaseous emergency oxygen system is accurately described by its capability to deliver 100% oxygen continuously. This is essential in emergency situations, especially in aviation, where the atmosphere may become hazardous due to altitude or cabin depressurization. The system is designed to ensure that pilots and passengers receive pure oxygen to maintain adequate levels of oxygen in the blood, thereby preventing hypoxia.

Using 100% oxygen is particularly effective because it can significantly improve oxygen saturation levels more rapidly compared to a mixture of air and oxygen. This is critical in emergencies, where time and effectiveness can be vital for survival and maintaining cognitive function during flight operations.

The other statements do not accurately characterize the high-pressure gaseous emergency oxygen system. For instance, it may not be automatically stoppable once activated without certain controls or system limitations, and the operational nature of these systems typically allows for an ample supply rather than a limited one. Furthermore, activation is often a manual process initiated by the pilot, but this does not encompass the entire functionality regarding continuous delivery of oxygen once the system is engaged.