Final answer:
The benefit of proper ventilation that is not actually beneficial in a fire situation is A. More oxygen is fed to the fire, as it can intensify the fire, contrary to the desirable effects of improving visibility, removing heat, and allowing occupants more survival time.
Step-by-step explanation:
BENEFITS OF PROPER VENTILATION
Proper ventilation provides several benefits in a structure, especially during a fire. When a fire occurs, ventilation helps to remove heat from the structure through the process of convection as hot air rises away from the observers. This can improve visibility and safety by allowing smoke to clear, which in turn improves visibility within the structure and gives occupants more time to react or escape, ultimately increasing survival time. However, feeding more oxygen to the fire is not a benefit of proper ventilation as it can exacerbate the fire. Ventilation can involve infiltration, natural ventilation through openings, and mechanical ventilation using systems that filter and distribute outdoor air indoors to maintain air quality.
Nonetheless, the correct answer to the student’s question, which is "Which of the following is not a benefit of proper ventilation?" is: A. More oxygen is fed to the fire. Providing excess oxygen to a fire can aid in its growth and intensity, which is certainly not desirable in firefighting scenarios or for the safety of the structure and its occupants.