How did Francesco Redi disprove the idea of spontaneous generation? He showed that flies were not produced by meat. He showed that microorganisms are present in air. He showed that microorganisms cause disease. He showed that flies spread disease.

he showed that flies were not produced by meat and therefore maggots came from fly eggs.

Francesco Redi disproved the theory of spontaneous generation which states that life can arise from the nonliving matter directly. He showed that if the meat was not exposed to air, flies did not develop on it.

Explanation:

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the answer to your question is b