You are presented with the question "Running water is better able to dissolve oxygen and nutrients than what?" and the following answer choices: 
- pouring water
 - scarce resources
 - ocean water
 - river water
 - acetic acid
 - Veins and arteries.
 - an organism's body
 - stagnant water

Now knowing that running water is better able to dissolve oxygen and nutrients than standing water and if the water stands still and becomes stagnant, it can become a breeding ground for mosquitoes, choose the best answer.


 

        stagnant water 