It allowed scientists to change the theory before any new information was collected, is the advent of the microscope most likely affect the foul-air theory.
What does the microscope affect in the foul-air theory?
Many biological processes and mechanisms that occur around us can only be understood if they are observed on a smaller scale.
Scientists can now view a variety of things, such as viral activity, cell movement, pores, and so on, thanks to the invention of the microscope.
Thus, option C is correct.
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