Final answer:
The best response for a nurse to give a patient complaining about the side effects of metoprolol on sexual function is to discuss alternative blood pressure medications with their doctor.
Step-by-step explanation:
The most therapeutic response to the patient who has concerns about the side effects of metoprolol would be option c: "Let's discuss this effect with your physician. There are other drugs available to manage your blood pressure that may not have the same adverse effect." This response is empathetic, acknowledges the patient's concerns about erectile dysfunction, and suggests a constructive way forward by offering to consider alternative medications with the physician.