At the beginning of the shift, a nurse receives report for her daily assignment. Which of the following situations should the nurse give first priority?

The correct answer is C: A client with COPD with an oxygen saturation of 84%. Oxygen saturation below 90% is considered critical, indicating hypoxemia in a client with COPD. Priority is given to critical physiological needs to avoid potential respiratory distress or failure. Choices A, B, and D are important but do not pose immediate life-threatening risks. The diabetic client with a blood glucose level of 195 mg/dL can be managed with insulin administration. The family member's questions can be addressed after addressing immediate client needs. The client who requires assistance to use the bathroom can be attended to once the critical client's needs are addressed. Prioritizing based on physiological urgency ensures client safety.