Question

To establish a link between a specific bacterium and a skin disease, researchers have shown that the bacterium was present in sick persons but not in healthy individuals. They isolated the bacterium in a pure culture and demonstrated that experimental healthy animals injected with this culture became sick. What other experiment do researchers need to perform to be absolutely sure that the bacterium is responsible for the disease? A) demonstrate that the bacterium coevolved with the diseased individual B) demonstrate that the bacterium is not able to live outside of humans or animals C) isolate bacterium from an infected sick animal and demonstrate that it is the same bacterium as the one used for infection

Answer 1

C - isolate bacterium from an infected sick animal and demonstrate that it is the same bacterium as the one used for infection.

Step-by-step explanation:

The only way to be 'absolutely sure' that the bacterium is the same and responsible for the disease is to isolate it from the sick animal to ensure it is the same they injected.