What types of environments require the use of SCBA?

The correct choice identifies environments with toxic gases, limited oxygen, or high temperatures as requiring the use of SCBA. Self-Contained Breathing Apparatus is specifically designed for use in situations where air quality is compromised and poses a significant risk to lung health and overall safety. Such environments can include those where hazardous materials are present that emit harmful substances, areas with insufficient oxygen levels due to confinement, or locations with excessive heat that can lead to respiratory distress.

In contrast, environments like offices with poor ventilation may not pose an immediate or life-threatening risk requiring SCBA, as general respiratory protection or ventilation may be sufficient. Outdoor areas during cold weather do not inherently require SCBA unless specific additional hazards are present. Clean rooms in laboratory settings generally have controlled air quality and do not typically present the same hazards that necessitate SCBA use. This highlights the critical need for SCBA primarily in emergency or hazardous situations where air quality could be life-threatening.