They all hold liquids. They can all be made of glass. They can all be marked in milliliters. They can all be used to measure the volume of a liquid.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What is the most important thing a cylinder, a measuring cup, and a beaker all have in common?
Possibilities:
- They all hold liquids.
- They can all be made of glass.
- They can all be marked in milliliters.
- They can all be used to measure the volume of a liquid.

They can all be used to measure the volume of a liquid.