You are presented with the question "What interacting with wind over long periods of time results in sand?" and the following answer choices: 
- rocks
 - soils
 - metal
 - rivers
 - wood
 - deserts
 - erosion
 - water

Now knowing that rocks interacting with wind over long periods of time causes weathering and most sands are weathered fragments of quartz, choose the best answer.


 

 rocks        