What type of system involves smoke detectors as a critical component?

A fire alarm system prominently involves smoke detectors as a critical component because these devices are specifically designed to detect smoke, which is a primary indicator of fire. When smoke is detected, the fire alarm system activates to warn occupants of the potential danger, allowing them to evacuate safely and take appropriate action.

In contrast, heating systems and air conditioning systems do not incorporate smoke detectors as part of their operational design; they serve entirely different functions related to temperature control and air circulation. Similarly, while emergency lighting systems provide illumination during power outages or emergencies, they do not include smoke detection as part of their purpose. Thus, the fire alarm system is uniquely positioned as the correct answer since it directly integrates smoke detectors to fulfill its critical role in fire safety and prevention.