You are presented with the question "streams start with runoff or what seeping out of a spring?" and the following answer choices: 
- Dew
 - oceans
 - summer
 - rain
 - h2o
 - CO 2
 - H20
 - evaporation

Now knowing that streams may start with runoff or water seeping out of a spring and water is made up of H2O molecules, choose the best answer.


 

     h2o    