Ventilation can be natural or artificial.

• A. Not applicable
• B. False
• C. True
• D. Not sure

Answer: (C)

Ventilation is the process of moving air to control heat, smoke, and toxic gases during a fire. It can be natural, using openings like doors and windows that rely on wind and the buoyancy of hot air to remove smoke and bring in fresh air, or artificial, using fans and ductwork to actively move air and shape the flow. This is true because both approaches are used in real-world fire operations. Natural ventilation can be quick and low-cost but is unpredictable and can worsen conditions if not managed carefully. Artificial ventilation offers more control and can be timed to the fire’s needs, though it requires power, equipment, and coordination. Depending on the building and situation, either method may be used, or they may be combined.