Answer:
II and III only
Explanation:
Soil erosion is the washing away of the top soil by agents such as flood, wind, etc.
Weathering is the breaking down of rocks on the Earth's surface.
The scenario where erosion and weathering can both occur is when a hurricane occurs and washes a large portion of a coastline to the sea and when grassland turns to desert, thereby exposing the top soil and causing weathering to occur.