Computer systems used as a master alarm must be continuously attended or provide remote signaling through which of the following?

The correct answer highlights the importance of timely communication in medical facilities where monitoring is essential for the safety and well-being of patients. Pagers are specifically designed for reliable, real-time communication in critical environments, ensuring that alarms and alerts can reach the appropriate staff members quickly.

Pagers are commonly utilized in healthcare settings due to their straightforward functionality and ability to transmit alerts in areas where traditional phone networks may be unreliable. They can provide immediate notifications, which is crucial for quickly responding to alarms generated by master alarm systems.

Other communication methods, while potentially effective in certain contexts, may not meet the rigorous requirements for immediacy and reliability in a healthcare setting. For instance, email and social media can introduce delays in communication due to factors like the need for internet connectivity or the slower nature of these platforms. Instant messaging might be useful in some instances, but it lacks the dedicated and focused approach provided by pagers, which are specifically built for critical alerting.