A nurse is teaching a client who has posttraumatic stress disorder about using mindfulness to manage stress. Which of the following statements by the client indicates an understanding of the teaching?

Choice A reason: Focusing on pleasant images is a form of guided imagery or distraction, not mindfulness. While it may reduce stress temporarily, it does not cultivate present-moment awareness or acceptance, which are core components of mindfulness. Choice B reason: Progressive muscle relaxation is a valuable stress-reduction technique but is distinct from mindfulness. It involves systematic tension and release of muscle groups rather than nonjudgmental awareness of the present moment. Choice C reason: Concentrating on what one is seeing, feeling, and hearing in the moment reflects the essence of mindfulness. It involves grounding oneself in the present experience with full attention and without judgment, which is particularly beneficial for clients with PTSD to reduce hyperarousal and improve emotional regulation. Choice D reason: Using a smartwatch to track physiological data may support overall wellness but does not constitute mindfulness. It is a form of biofeedback or monitoring, not a cognitive or meditative practice.