What is stored in the high-pressure oxygen flask located in the O2N2 area?

The high-pressure oxygen flask located in the O2N2 area is designed specifically to store high-pressure oxygen. This oxygen is essential for various applications within the ship, including supporting personnel breathing systems, combustion processes, and certain operational activities where a reliable oxygen supply is crucial. The storage system is engineered to maintain the oxygen at elevated pressures, enhancing its availability for immediate use when required.

In contrast, low-pressure oxygen would not be found in a high-pressure flask, as the storage and handling requirements differ significantly. High-pressure nitrogen is not applicable in this context, as the focus is on oxygen storage, while liquid oxygen refers to oxygen in a cryogenic state, which is different from the high-pressure gaseous form stored in the flask. Therefore, C is the only choice that correctly identifies the contents of the high-pressure oxygen flask.