How did the 2014 Colorado case demonstrate just what a versatile zoonotic disease the plague is? A.) In this case, antibiotics were not effective against the bacteria.
B.) In this case, scientists could not track down a specific host.
C.) In this case, the bacteria infected humans through a dog.
D.) In this case, the bacteria had been dormant for decades before regenerating.

C). In this case, the bacteria infected humans through a dog.

Explanation:

The Colorado Department of Public Health and Environment (CDPHE) in July 2014 witnessed the 'Yersinia pestis' bacteria from the blood of a patient with Pneumonia. It was later noticed that the patient got infected through a dog suffering Hemoptysis. This pneumonic plague case even caused the human-to-human transmission of the bacteria along with the animal-to-human. Thus, option C correctly displays how the plague is a versatile zoonotic disease.