Final answer:
The appropriate response by the nurse would be to provide a calm and empathetic response, acknowledging the client's feelings.
Step-by-step explanation:
The appropriate response by the nurse in this situation would be b) Provide a calm and empathetic response, acknowledging the client's feelings. Ignoring the client's statements and continuing with the assessment (option a) may worsen the client's anxiety and exacerbate their distress. Restricting the client (option c) may escalate their agitation and potentially cause harm. Administering a sedative (option d) should only be done under the guidance and prescription of a physician, and should not be the first line of intervention.