You are presented with the question "What can provide a renewable resource?" and the following answer choices: 
- By coral exoskeletons
 - oil
 - fossil fuel
 - damming a river
 - gas
 - peachleaf willow
 - sunlight
 - Electrical energy

Now knowing that hydropower requires damming a river and hydropower is a renewable resource, choose the best answer.


 

    damming a river     