Q: Fact 1: Soil is formed by weathering. Fact 2: Rocks breakdown by weathering. Given the two facts above, what helps soil to form?

OPT:
A). The planting of flowers
B). The breakdown of rocks
C). organic molecules
D). The changing of seasons
E). Organic compounds
F). swamp vegetation
G). evaporation
H). The movement of clouds
A:
B).