Which of the following is an example of an Alarm Notification Appliance?

An Alarm Notification Appliance is a device designed to alert occupants of a building to an emergency situation, such as a fire. The correct choice, a bell, fits this definition as it is used to produce an audible sound to warn individuals in the area of an impending danger, ensuring they take necessary actions like evacuating the building or seeking safety.

To further elaborate, smoke detectors, while critical for detecting smoke and initiating the alarm process, primarily serve the function of sensing danger rather than notifying occupants. Fire extinguishers are lifesaving devices used to combat small fires but do not provide a warning themselves. Emergency exit signs guide people to safety but are not audible or alarm-oriented devices. Thus, the bell stands out as the correct example of an appliance specifically intended for alarm notification.