The HUD allows users to see which two pieces of information while wearing the SCBA?

The correct answer indicates that the Head-Up Display (HUD) provides critical real-time information that is vital for the safety and effectiveness of the user while wearing the SCBA. Specifically, it displays both cylinder pressure and alarm status.

Cylinder pressure is crucial because it informs the user about the remaining air supply. Knowing the pressure allows the wearer to gauge how much time they have before needing to replace or recharge the SCBA, which is essential in emergency situations where every second counts.

Alarm status is equally important as it alerts the user to any potential issues with the SCBA system, including low air supply warnings and other operational alerts. This helps the wearer remain aware of their immediate environment's safety and the equipment's functionality.

By having both these pieces of information readily available via the HUD, users can make informed decisions about their safety and operational readiness while engaged in hazardous situations.