Question

what is the definition of a pandemic?
o a. when a disease does not have a known cause
o b. when a disease quickly spreads around the world
o c. when a harmless disease has no cure or vaccine
o d. when a disease infects a very small group with no cure or vaccine

Explanation:

A pandemic is a global disease outbreak. It's when a disease spreads rapidly across the world.

Answer:

B. When a disease quickly spreads around the world