Final answer:
The nurse should ask the client about their concerns regarding taking the medication. The option (D) is correct.
Step-by-step explanation:
The appropriate response for the nurse in this situation would be, which is to ask the client to explain their concerns about taking the medication. By doing so, the nurse shows empathy and acknowledges the client's autonomy in decision-making.
The nurse needs to address the client's concerns and provide information that may alleviate any fears or misconceptions the client may have about the medication. This approach fosters open communication and helps establish a therapeutic nurse-client relationship. Therefore, option (D) is correct.