Q: Fact 1: Weathering means breaking down rocks from larger whole into smaller pieces by weather. Fact 2: Erosion breaks the rock down again, and the cycle continues. Given the two facts above, what means that rocks are eroded down again?

Possible answers:
[a]. flooding.
[b]. rainfall.
[c]. salt and water..
[d]. weathering.
[e]. freezing.
[f]. chilling.
[g]. frosting.
[h]. mines.
The answer is:
[d].