Why does increased population density increase the risk of pandemic flu? A. Flu is capable of evolving to become more resistant. B. Flu is more easily transmitted from person to person. C. Flu is able to cause more severe symptoms and deaths. D. Flu is more likely to be transmitted from animal contact.
B) Flu is easily transmitted from person to person.
If there is a very big population density, it means more people are present in a small amount of space. Thus they will come into contact more often and the virus is likelier to spread more rapidly.
