Which of the following is NOT a way the normal microbiota of the intestine helps to prevent infection?
A) It produces acids that lower the pH of the stomach.
B) It speeds up the process by which microbes are flushed from the digestive tract.
C) It consumes food and occupies space, outcompeting potential pathogens.
D) It generates large quantities of oxygen that kill anaerobic pathogens.
Answer: D) It generates large quantities of oxygen that kill anaerobic pathogens.
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