Answer:
Option a) a disease that affects a large number of people in the world in a short time endemic.
Explanation:
The pandemic disease is an kind of epidemic disease. The epidemic affects large number of people. The pandemic spreads over large areas and across the world. The pandemic is not endemic that is stable and confined to particular area.
The infectious disease are considered as pandemic as such disease can spread and affect a large number of individuals. The HIV-AIDS is a great example of pandemic disease. Thus, pandemic is a disease that affects a large number of people in the world in a short time.
