A nurse is caring for a client who is 3 hr postoperative following a total knee arthroplasty. Which of the following actions should the nurse take to prevent venous thromboembolism?

Limit the client's fluid intake to 2,000 mL daily.

Massage the client's legs every 4 hr while they are awake.

Keep the client's knees in a flexed position while they are in bed.

Encourage the client to perform circumduction of the feet.