What religion is practiced by most people in north africa?
a. catholicism
b. islam
c. judaism
d. hinduism

Based on the percentage of total believers, the dominant religion in Northern Africa is:

b. Islam

This religion comprises about 90% of the total population who are believers. This connotes that the people living in Northern Africa are mostly Muslims. 

i think the answer is true

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;