Tracy is a nursing assistant who has been working at the same hospital for years. She is not trained on the IV system, but has seen it used many times. A patient’s IV starts to beep because her IV line is tangled. Tracy untangles the line and leaves. When the IV is still beeping a few minutes later, she turns off the IV beep because the nurse is busy. What error did Tracy make?

going back into the patient’s room

leaving the room with the IV beeping

untangling the IV

pushing the IV button