The model the researcher can use to simulate how the bacterial infection might spread through a human body is a physical model (option B).
A model is a representation of a physical object, usually in miniature.
A model is a simplified representation used to describe the workings of a real world system or event.
There are different types of models used as follows;
A physical model is a simplified material representation of an object or phenomenon that needs to investigated.
According to this question, the model the researcher can use to simulate how the bacterial infection might spread through a human body is a physical model.
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