Possible answers: (a). calcite. (b). streams. (c). gourdin. (d). Sediment. (e). cactuses. (f). watershed. (g). streams.. (h). crust.

Fact 1: If soil is permeable then water easily flows through that soil. Fact 2: Gourdin soils have slow permeability. Given the two facts above, what does water easily flow through?
Answer:
(c).