What is the most effective way to notify building occupants of a fire?

Using a fire alarm system is the most effective way to notify building occupants of a fire. This system is specifically designed to alert all individuals within the building to imminent danger rapidly and efficiently. Fire alarms are equipped with audible alarms and visual indicators that ensure occupants are aware of the emergency, prompting them to evacuate quickly.

While activating a pull box can also serve as a means to initiate the alarm system, it relies on someone being present to pull the box and does not provide immediate notification to all building occupants. Sending a text message is not an effective method during a fire, as many occupants may not receive it in time or may not have their phones on them. Gathering people in a common area does not address the immediate danger posed by fire and can actually put occupants at greater risk if they are not evacuated properly. Therefore, reliance on a comprehensive fire alarm system is crucial in ensuring everyone's safety in case of a fire emergency.