You are presented with the question "What tool might measure something in meters?" and the following answer choices: 
- A scale
 - microscope
 - bamboo
 - A protractor
 - feet
 - A ruler
 - biceps
 - A thermometer

Now knowing that aruler is used for measuring the length of an object and meters are the standard to express measurement of length, choose the best answer.


 

      A ruler   