Which of the following would be the best example of the metabolic diversity of microbes being beneficial or valued to humans? O Prior to surgery, surfaces, equipment, and gloves must be sterilized or disinfected. Without these steps, contamination by microbes is possible. In many food-processing plants, even traces of contamination by certain bacteria or fungi can lead to spoilage of batches of the product. Certain species of bacteria produce and secrete enzymes that can be used for cleaning or industrial processes. Some strains of bacteria produce highly toxic compounds during infection, which can cause damage to human cells/tissues or systems. O O O

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A: