What type of control behavior is typical in a "closed loop" system?

In a closed-loop control system, automatic behavior is characteristic because it continuously monitors and adjusts the output based on feedback from the system. This feedback mechanism allows the system to maintain the desired output by making real-time adjustments in response to variations and disturbances.

For instance, in a temperature control system, a thermostat sends a signal to the heating mechanism when the room temperature drops below the setpoint. As the heater works to increase the temperature, the thermostat simultaneously receives data on the current temperature, allowing it to deactivate once the desired temperature is reached. This self-regulating ability is what distinguishes closed-loop systems from open-loop systems, where no feedback is utilized to modify the action based on the output.

Other choices represent different behaviors that do not align with the inherent functionality of closed-loop systems. For example, both manual and intermittent control behaviors are not typical for closed-loop systems, as they would rely on human intervention or operate in a non-continuous manner, respectively.