A, i think. i don't know a lot but i think a makes the most sense.
Answer:
C. Europe wanted Africa's valuable resources
Explanation:
During this time, many European countries expanded their empires by aggressively establishing colonies in Africa so that they could exploit and export Africa's resources. Raw materials like rubber, timber, diamonds, and gold were found in Africa. Europeans also wanted to protect trade routes.
Ocean currents act much like a conveyor belts, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.