What forms of respiratory protection are mentioned?

The correct choice highlights the primary types of respiratory protection commonly employed to ensure safety in environments where air quality may be compromised. Respirators, masks, and self-contained breathing apparatus (SCBA) are designations for equipment specifically engineered to safeguard the wearer from inhaling harmful substances, including airborne contaminants such as fumes, dust, vapors, and gases.

Respirators are designed to filter out specific types of particles or gases, while masks may refer to simpler equipment that provides a basic level of filtration. Self-contained breathing apparatus is used in scenarios where the air does not meet safety standards, as it supplies a personal source of breathable air and is essential for high-risk situations, such as firefighting or entering toxic environments.

In contrast, other forms of protection mentioned in the remaining options either do not directly pertain to respiratory safety or represent different categories of protective equipment. Breathing tubes and filters, while they might be components related to respiratory systems, are not recognized as standard forms of respiratory protection by themselves. Similarly, cylinders and tanks generally store gases rather than providing protective filtering for individuals. Lastly, hazmat suits and helmets serve different purposes, focusing on overall bodily protection from hazardous materials rather than specifically addressing respiratory hazards.