when caring for a client who has an open reduction and internal fixation of hip , the nurse encourages active leg and foot exercise of the unaffected leg every 2 hours to help

when caring for a client who has an open reduction and internal fixation of hip , the nurse encourages active leg and foot exercise of the unaffected leg every 2 hours to help to:
a.  reduce leg discomfort.
b.  maintain muscle strength.
c.  prevent formation of clots.
d.  limit venous inflammation.