Final answer:
b. The unexpected death of your spouse must be so painful. I'm glad you're able to talk to me about your feelings. The nurse should choose option b as it shows empathy and support for the grieving process.
Step-by-step explanation:
The most therapeutic comment the nurse can make in this situation is option b. The nurse acknowledges the pain and validates the spouse's ability to express their feelings. This response shows empathy and support for the grieving process.