Final answer:
The statement that should concern the nurse and require further assessment is A. "I will die if my cat dies".
Step-by-step explanation:
This statement indicates a strong attachment to the cat that may be unhealthy and indicative of a lack of emotional stability. It suggests that the client's well-being is strongly dependent on the well-being of the cat, which could be a sign of an underlying mental health issue.
This could indicate a severe form of depression, which would require immediate attention and assessment by the nurse. It would be important for the nurse to explore this further and assess the client's overall emotional state and level of distress. So therefore the correct answer is A. "I will die if my cat dies".