Q: Fact 1: Rain causes erosion. Fact 2: Erosion and landslides are common. Given the two facts above, what can be caused by rain?

pick from the following. 1. landslides. 2. Water expanding. 3. deforestation. 4. salinity. 5. vaporization. 6. flooding. 7. Pollution. 8. contamination.
The answer is:
1.