You are presented with the question "What can cause a lake to form?" and the following answer choices: 
- Something that generates electricity
 - water and minerals
 - rivers and streams
 - fissures of hot, acidic water
 - dividing into two parts
 - it flows to a lower level
 - a hydraulic system
 - changing the phase

Now knowing that damming a river can cause a lake to form and the dam also generates electricity, choose the best answer.


 

 Something that generates electricity        