You are presented with the question "What do thresher sharks move through?" and the following answer choices: 
- biome
 - rivers
 - Fish
 - oceans
 - Soil
 - Sediment
 - gills
 - Water

Now knowing that along tail can be used to move through water by an animal and thresher sharks are long-tailed subtropical fish that swim along the surface, choose the best answer.


 

        Water 