From reading this sentence, 'What kind of 'PATHOGEN' is most dangerous?" you can tell that 'pathogen' means: a single-celled

Question

From reading this sentence,
'What kind of 'PATHOGEN' is most dangerous?"
you can tell that 'pathogen' means: 
a single-celled organism
a virus
a microorganism that causes disease
an illness or disease

Kunduz · Accepted Answer

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