You are presented with the question "A long tail can be used to do what?" and the following answer choices: 
- courtship
 - Electrical energy
 - gather meat
 - hide from predators
 - swim through water
 - it keeps an organism warm
 - reproduce
 - build shelter

Now knowing that along tail can be used to move through water by an animal and thus swimming is defined as a special kind of moving, namely moving in or through water, choose the best answer.


 

     swim through water    