Research shows that levels of a certain protein are elevated in the blood of people with a bacterial infection. People with a viral infection show only trace amounts of the protein. The level of the protein can be determined in about an hour after a blood test.
Which of these is a benefit of knowing whether a person with a respiratory infection has an elevated level of this protein in the blood?
A. A set of aerobic exercises can be recommended.
B. A diet of essential nutrients can be recommended.
C. A decision can be made about whether to take an x-ray.
D. A decision can be made about whether to use antibiotics.
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