Final answer:
The most therapeutic response from the nurse would be option a. 'You're right to protect him at a time when he is so vulnerable.'
Step-by-step explanation:
A person whose husband is terminally ill says they don't want to cry in front of him and want to protect him from knowing how close he is to death or how sad they are. The most therapeutic response from the nurse would be option a. 'You're right to protect him at a time when he is so vulnerable.' This response acknowledges the person's desire to protect their husband's feelings and supports their decision.