A medical assistant is preparing to place lower-limb electrodes on a patient who has a left above-the-knee amputation. Which of the following actions should the assistant take when placing the lower-limb electrodes?

This option is incorrect because the left limb is amputated, and there is no distal portion available for electrode placement. Additionally, placing the right electrode on the most proximal portion of the right limb does not provide consistent electrode placement that can accurately reflect the electrical activity needed.

This choice is incorrect as there is no distal portion on the left limb due to the amputation. Placing the right electrode on the groin would also not provide a standardized point of measurement for the right limb, potentially leading to inaccurate readings.

This option is incorrect because it suggests placing both electrodes on the right limb, neglecting the need for an electrode placement on the left side, which is necessary for proper monitoring and assessment in this case.