A nurse is caring for a client who has a prescription for a continuous passive motion (CPM) machine following a total knee arthroplasty. Which of the following actions should the nurse take?

Turn off the CPM machine during mealtime.

Maintain the client's affected hip in an externally rotated position.

Instruct the client how to adjust the CPM settings for comfort.

Store the CPM machine under the client's bed when not in use.