You are presented with the question "What is used to measure the base unit of the metric system which is the meter?" and the following answer choices: 
- solid, liquid, gas
 - A laser
 - A measuring cup
 - bottom of feet
 - A tape measure
 - focusing a lens
 - Time and energy
 - A level

Now knowing that atape measure is used to measure length and length The Base unit for length in the metric system is the meter , choose the best answer.


 

     A tape measure    