You are presented with the question "What does Lake Tahoe originate from?" and the following answer choices: 
- hydrogen and oxygen
 - It's manmade
 - An ocean
 - tectonic plates coliding
 - A hurricane
 - A mountain stream
 - Water expanding
 - body water

Now knowing that lakes are formed by precipitation and runoff and for example, Lake Tahoe is a huge lake originating from mountain stream runoff, choose the best answer.


 

      A mountain stream   