Which statement best describes what the mass of an object represents? Mass is the length of an object. Mass is the amount of matter in an object. Mass is the amount of space taken up by an object. Mass is the ability of an object to float.

The correct statement about the mass is: Mass is the amount of matter in an object.

Here are the corrected mistakes in the rest of options to remember:

Buoyancy is the ability of an object to float

Volume is the amount of space taken up by an object.