Pandemic is an epidemic of a contagious disease that circulates throughout the human population across an area.
What is a pandemic?
The purpose of a pandemic exists the worldwide spread of a unique disease, it indicates that the disease influences large regions of the world, which occasionally could be entire countries or entire continents, therefore the number of affected people exists illustrated in big numbers, existing one of the features of a pandemic the hardness to prevent it, it exists even problematized to be eliminated.
Therefore, the correct answer is option c. It affects one region.
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