You are presented with the question "What can be used to measure the volume of water?" and the following answer choices: 
- Spring Loaded Cylinder
 - Tape Measure
 - watershred
 - Earth orbiting the Sun
 - an electron lens
 - a graduated cylinder
 - an electron microscope
 - Ruler

Now knowing that agraduated cylinder is used to measure volume of a liquid and most of the earth's water is liquid, choose the best answer.


 

      a graduated cylinder   