Which of the following is a fire hazard often addressed in prevention programs?

Open flames from candles and stoves represent a significant fire hazard that prevention programs frequently target. This is because both candles and stove tops pose inherent risks of ignition if not monitored properly. Candles can easily tip over or ignite surrounding materials if left unattended, while stoves can catch fire if flammable items are placed too close or if cooking is left unattended. Given that these sources of open flames can lead to house fires or other dangerous situations, many fire prevention programs emphasize awareness and safety measures regarding their use.

In contrast, while using electric vehicles and issues related to indoor air quality are important topics, they are not specifically categorized as immediate fire hazards in the same way that open flames are. Ventilation systems, while critical for safety and health, primarily deal with air circulation and do not directly pose fire hazards like open flames do. Thus, prevention programs focus more on mitigating the risks associated with direct sources of fire.