Question

all microorganisms are best defined as organisms that
multiple choice
can only be found growing in laboratories
cause human disease
are infectious particles
are too small to be seen with the unaided eye

Explanation:

Microorganisms are living organisms that are too small to be seen by the naked - eye. They can be found in various environments, not just laboratories. Not all microorganisms cause human disease, and not all are infectious particles.

Answer:

D. are too small to be seen with the unaided eye