A college student comes to the school's health clinic troubled by urinary frequency and burning with right lower back pain. Which intervention should the nurse implement first?

A. Palpating the right flank for tenderness is essential to assess for possible renal involvement, such as a kidney infection or kidney stone, which could be causing the urinary symptoms and right lower back pain. However, it is not the initial step.B. Testing the urine for the presence of hematuria is important in assessing for potential urinary tract infection or other renal pathology but does not directly address the cause of the right lower back pain.C. Evaluating the urine for a strong odor may provide information about a possible urinary tract infection, but it is not the most immediate intervention for addressing the client's symptoms, compared to measuring the vital signs.D. Measuring the temperature and pulse rate is important for identifying any signs of systemic infection or inflammation that could be contributing to the patient's symptoms.