Limestone, Sandstone, and Shale are all sedimentary rocks so granite is the answer.
If my memory serves me well, the answer should be: When the Congo River reaches Kinshasa, <span>it flows slowly into the Atlantic. Congo River is the second largest lake in the world. It takes a long way to reach the Atlantic: In the middle it flows towards Matadi and divides into several arms and finally it freely flows into the Atlantic.</span>
A. This is because these formations occur on the surface and can range from mountains to forests.
