If agraduated cylinder is used to measure milliliters, then what could be used to to measure how many milliliters something is?

Answer choices:
- solid, liquid, gas
 - A graduated cylinder
 - objects that have mass
 - an electron microscope
 - The bending of a ray of light
 - deoxyribonucleic acid
 - a hydraulic system
 - microscope

 

  A graduated cylinder        