Final answer:
The primary difference between closed-loop and open-loop motor control is Environmental Feedback, with closed-loop systems using feedback to adjust outputs and open-loop systems operating without such adjustments.
Step-by-step explanation:
The primary difference between closed-loop and open-loop motor control is A) Environmental Feedback. Closed-loop control systems utilize feedback to continuously adjust and correct the motor's output, ensuring precision and adaptation to changes. In contrast, open-loop systems do not use feedback to adjust their actions, operating solely on preset instructions without considering changes in the environment.
In the context of biology, organisms use feedback mechanisms to regulate their internal environments and react to external changes. A closed-loop control in biological systems, like homeostasis, involves monitoring conditions and making adjustments based on feedback, similar to how closed-loop motor controls work. Conversely, open-loop controls in biology follow fixed action patterns without modification in response to feedback.