Which characteristics make mucus such an effective defense?
A) mucus is hypertonic so it kills many pathogens via dehydration or plasmolysis
B) mucus is hypotonic so it kills many pathogens via dehydration or plasmolysis
C) mucus is sticky so it traps pathogens and is subsequently swept upward via the mucociliary escalator
D) mucus is thin and runny and flushes microbes away rapidly
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