Final answer:
The nurse should respond by acknowledging the client's fear and validating their emotions, while also reassuring them that the risks have been thoroughly explained.
Step-by-step explanation:
The nurse should respond by saying, "It's normal to feel anxious, but the risks have been thoroughly explained to you."
This response acknowledges the client's fear and validates their emotions, while also reassuring them that their concerns have been addressed. Healthcare providers need to listen to and validate patient concerns, especially when it comes to consent for medical procedures.
By choosing this response, the nurse shows empathy and understanding, which can help alleviate the client's anxiety and build trust in the therapeutic relationship.