Question

The president has called Ebola an international crisis and a threat to national security. Why is this disease considered a threat to national security?

a.) The disease is killing many people in Africa.
b.) The disease appears and disappears throughout history.
c.) The disease is killing medical workers.
d.) The disease travels across international borders when people travel who have it.

Answer 1

I believe the answer is D: the disease travels across international borders when people travel who have it

This because if they traveled to different parts in the world and carry the disease then it could lead to an out break which can lead to a threat in national security

Hope this helps you
Good luck

Answer 2

d.) The disease travels across international borders when people travel who have it.