Why is it critical to don the SCBA quickly in an emergency?

Donning the SCBA quickly in an emergency is essential primarily to minimize the risk of exposure to hazardous environments. In situations where there are toxic gases, smoke, or other dangerous airborne substances, every second counts. The longer an individual remains in such environments without proper respiratory protection, the greater the risk of respiratory distress, injury, or even fatality.

Quickly donning the SCBA allows the user to establish a sealed breathing zone, providing clean, breathable air and protecting the lungs from harmful substances. This prompt action ensures the responder can operate effectively and safely within an environment that poses an immediate threat to health.

While other options may touch upon important aspects of SCBA usage, they do not directly address the life-threatening nature of emergencies where prompt SCBA use is critical. Ensuring protection from hazardous elements should always be the primary focus during such urgent situations.