You are presented with the question "When the Amazon floods it deposits what in flood plain?" and the following answer choices: 
- earth
 - cities
 - rocks
 - dirt
 - seawater
 - Sand
 - saltwater
 - soil

Now knowing that when a river floods , that river deposits soil in flood plains and by far the mightiest of the great rivers is the Amazon , choose the best answer.


 

        soil 