Answer :
Final answer:
The subject of this question is Fire Detection Systems. So The correct answer is a) Annually.
Explanation:
Fire detection systems ensure the early detection of fires in buildings to protect lives and property. The question specifically focuses on the testing and adjustment of these systems to maintain their reliability and operating condition.
The correct answer is a) Annually. All fire detection systems, except for factory calibrated detectors, need to be tested and adjusted on an annual basis. This ensures that the systems are working correctly and will provide early warning in case of a fire.
