The correct answer is B. Nigeria and Mali only
Explanation:
The chart presented shows the religions practiced in different countries in Africa and the percentage of the population in each country that practices each religion. In this context, a higher percentage shows more people in a specific country practices a religion; also, 50% or more shows at least half of the population practices a religion.
In this context, the countries in which at least half of the population practice Islam are Nigeria and Mali because in Nigeria the percentage for this religion is 50%, which is exactly half of the population, and in Mali, the percentage is 90% which is almost all the population. Moreover, in Saudi Arabia and Zimbabwe, the percentage for this religion is 1%.
