A Distributed Control System (DCS) is the best match because the scenario describes multiple automated control loops (temperature, pressure, conveyor speed) that are coordinated by a centralized supervisory network linking multiple controllers across a facility. In industrial environments, a DCS architecture distributes control functions across many controllers located near the process equipment, while supervisory control and operator interfaces coordinate and monitor the overall process. This makes DCS common in continuous and process industries such as steel, chemical, oil and gas, and manufacturing plants where many interdependent loops must operate reliably together.
The scenario’s “centralized supervisory network” is a key DCS hallmark: operators and supervisory systems (often including engineering workstations and HMIs) provide centralized monitoring, setpoints, alarms, and coordination, while the actual loop control is executed by distributed controllers. This differs from a single isolated controller or purely manual operation. The purpose is to maintain stable process control and ensure coordinated behavior across different production areas.
Why the other options don’t fit:
A manual loop (A) implies human-operated control rather than automated feedback loops. The plant is described as having “numerous automated loops,” so manual loop is incorrect.
Open loop (C) control does not use feedback from the output to adjust the input; it is not typical for precise regulation of temperature and pressure where feedback is essential.
Closed loop (D) does describe feedback-based regulation and is true of many industrial loops; however, the question asks for the OT system concept applied based on the overall facility design—specifically a supervisory network coordinating multiple controllers—pointing to the architecture (DCS) rather than the loop type.
Therefore, the correct answer is B. Distributed Control System (DCS).
