A nurse is caring for a client who is postoperative following total hip arthroplasty. Which of the following actions should the nurse take to prevent dislocation of the prosthesis?

Position the client's knees slightly higher than the hips when up in a chair.

Keep an abduction pillow between the client's legs.

Raise the head of the client's bed to a high-Fowler's position.

Elevate the client's affected leg on a pillow when in bed.