What form of call receipt at the communications center uses various arrangements to transmit alarms?

The correct answer is private and automatic fire alarm systems. These systems are specifically designed to detect fire and automatically transmit alarms to a communications center or fire station without the need for manual intervention. They utilize various technologies, such as smoke detectors, heat detectors, and other sensors, which can be interconnected to transmit alerts when a potential fire condition is detected.

This automatic arrangement allows for a quicker response time since the communication of the alarm happens seamlessly and instantaneously. These systems can include direct lines to fire departments, ensuring that alerts are promptly received and acted upon.

In contrast, walk-ins refer to instances where individuals bring alarm notifications directly to the fire station, which is not as efficient as the automated systems. Municipal fire alarm systems may involve alarms set up within a specific locality, but they often rely on manual activation or may not always have the sophistication in transmitting alarms as private automatic systems do. The telephone option relies on individuals to place calls, which introduces delay and potential for miscommunication compared to the automatic nature of the correct choice.