Which of the following is one of the major components of the SCBA?

The face piece is a critical component of the SCBA as it serves as the interface between the user and the breathing apparatus. It is designed to create a secure seal around the face, ensuring that the air supplied from the tank is delivered directly to the firefighter without any contamination from the surrounding environment. The face piece also includes features like a visor for visibility and a communication system, allowing for better interaction with team members while operating under hazardous conditions.

In the context of the SCBA, the face piece protects the user from inhaling smoke, toxic gases, and particulates, making it an essential element for the safety and effectiveness of the firefighting operation. Its design is focused on comfort and fit to allow for prolonged wear during emergency situations.