Asbestosis is a lung disease that is caused by inhaling asbestos, a mineral that was once used as insulation and fire retardant in building materials. Which best describes abestosis?

Asbestosis results from inhaling asbestos fibers, not from a disease-causing microorganism. Germ theory explains diseases caused by microbes, so it does not describe how asbestosis is transmitted or develops; exposure to asbestos is the cause. The correct choice is “Its transmission cannot be studied using the germ theory of disease.”

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