Final answer:
The nurse should respond by acknowledging the patient's concerns and providing reassurance that there are ways to maintain intimacy after a modified radical mastectomy.
Step-by-step explanation:
The best response by the nurse in this situation would be option b) It's natural to have concerns, but there are many ways to maintain intimacy. This response acknowledges the client's fear and validates their concerns, while also providing reassurance that there are ways to maintain intimacy even after a breast is removed. The nurse could further expand on this by mentioning options such as using prosthetics, exploring different sexual positions, or seeking counseling if needed.