A nurse is interviewing a client with posttraumatic stress disorder (PTSD) when a loud, booming noise from a passing car's radio rattles the windows. The client jumps onto a chair, wide-eyed and frantic. Which statement by the nurse is the most therapeutic response? "What kinds of feelings are you experiencing?" "Take my hand and I'll help you down." "Loud noises cause you to become very upset." "Have you experienced this kind of thing before?"