Final answer:
The nurse's response that demonstrates assertiveness is A. "I feel as though I met the standard of care. Would you tell me more about your concerns?"
Step-by-step explanation:
The nurse's response that demonstrates assertiveness is A. "I feel as though I met the standard of care. Would you tell me more about your concerns?" This response acknowledges the other nurse's concerns and invites further discussion to understand the issue. It shows assertiveness by expressing confidence in the care provided while also being open to feedback.