In the climate regions, where precipitation exceeds 10 inches, a prolonged summer-season drought of three or four months produces a unique array of grasses, shrubs, and trees.

semi-arid climate region or steppe regions

Explanation: Semi-arid region usually located between arid and tropical climate regions receives precipitation below potential evapotranspiration. The precipitation of the region exceeds 10 inches but it is not as low as the desert climate. semi-arid climates varies depending on conditions such as temperature, and they spring up different biomes.

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.