Final answer:
D.Actuator. An actuator is the combination of conditioning plus the element being controlled by the computer.
Step-by-step explanation:
The combination of conditioning plus the element being controlled by the computer is called a actuator. An actuator is a device that converts an electrical signal or command into physical action. It is commonly used in computer-controlled systems to move or control various mechanical components, such as valves, motors, and robotic arms.