Which is a function of alarms and sprinklers?

• A. Detect fire presence
• B. Ventilate the area
• C. Heat the building
• D. Provide lighting

Answer: (A)

The key idea here is how these devices respond when a fire starts to protect occupants and property. Alarms are designed to sense fire conditions (like heat or smoke) and alert people to evacuate and call for help. Sprinklers, activated by heat, release water to control or suppress the fire and slow its spread. Taken together, their common role is to indicate that a fire is occurring and to start the protective response. That makes detecting fire presence the best fit among the options. The other choices—ventilating the area, heating the building, or providing lighting—are not functions of alarms or sprinklers.