Correct Answer: CThe appropriate response to a client expressing hopelessness and thoughts of suicide is to acknowledge their feelings and invite them to elaborate. This helps the client feel heard and understood, potentially opening up a conversation that could provide further insight into their state of mind. By saying 'You are telling me that you are feeling hopeless at this point?', the nurse not only acknowledges the client's feelings but also encourages them to talk more about their emotions, which is crucial for providing effective psychological support and intervention in such situations.