The nurse is caring for a client who had a left modified radical mastectomy. The client received discharge instructions for performing range-of-motion (ROM) exercises on her left arm. Which of the following, if reported by the client on her return visit to the clinic, would indicate to the nurse that the instructions have been followed correctly? 1. regular squeezing of a tennis ball in her left hand 2. placing her left palm against a wall and “climbing” the wall with the left fingers 3. carrying light hand weights while walking 1 mile every other day 4. performing isometric exercises with both arms extended