Final answer:
Regular maintenance, high-quality components, and proper installation all contribute to fire alarm system reliability.
Step-by-step explanation:
All of the above contributes to fire alarm system reliability. Regular maintenance and testing is essential to ensure that the system is functioning properly and can detect fires promptly. High-quality components help to ensure that the system is reliable and can accurately detect fires. Proper installation ensures that the system is set up correctly and can effectively detect and respond to fires. By combining regular maintenance and testing, high-quality components, and proper installation, fire alarm systems can achieve high levels of reliability.