You are presented with the question "What is required for the ideal habitat for new stands of cottonwood?" and the following answer choices: 
- sunlight
 - nutrients
 - warmth
 - Sediment
 - Black tar
 - Hot magma
 - trees
 - Chainsaws

Now knowing that asandbar is formed by water moving sediment downstream and bare sandbars are the ideal spots for new stands of cottonwood, choose the best answer.


 

    Sediment     