Explanation

The client's chest x-ray shows clear lung fields.

Rationale: A chest x-ray is a diagnostic test that can confirm the presence or absence of pneumonia by showing areas of consolidation or infiltration in the lung tissue. A clear chest x-ray indicates resolution of pneumonia and effectiveness of treatment.

Incorrect options:

A) The client's temperature is 37.2°C (99°F). - This is a normal finding, but it does not rule out pneumonia as some clients may have low-grade fever or no fever at all with pneumonia.

B) The client's white blood cell count is 12.5 x 10^9/L. - This is an elevated finding, as the normal range for white blood cell count is 4.5 to 11 x 10^9/L. An elevated white blood cell count indicates inflammation or infection and does not reflect the effectiveness of treatment.

C) The client's oxygen saturation is 95% on room air. - This is a normal finding, as the normal range for oxygen saturation is 95% to 100%. However, it does not indicate the severity or resolution of pneumonia, as some clients may have normal oxygen saturation despite having pneumonia.


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