Question

European and American countries had less than 1000 deaths caused by measles in 2006. One could attribute this significant difference between them and the other regions to

A. less vaccinations given.
B. more vaccinations given.
C. vaccinations not working effectively.
D. more exposure to the disease.

Answer 1

B. is the right answer.

I just took the test

Answer 2

should be b if im reading it right that the answer would cause a significant difference