You are presented with the question "Where does silt come from?" and the following answer choices: 
- loose soil
 - Rocks breaking down
 - salt and water.
 - The area was once underwater
 - A lot of rain
 - Dry air
 - Hot temperatures
 - tectonic plates coliding

Now knowing that weathering means breaking down rocks from larger whole into smaller pieces by weather and silt forms form the weathering of rocks, choose the best answer.


 

  Rocks breaking down       