Final answer:
The element of art that defines the amount of space occupied by an object is volume, which applies to 3-dimensional work and determines the space contained within.
Step-by-step explanation:
Volume applies to 3-dimensional work and denotes the amount of space it contains. For example, a vessel will usually have the same volume for a similar kind and size and may occupy the same amount of shelf space yet can still have space around it. This is different from mass, which refers to the volume and density and the perceived weight of the artwork, and form, which gives shape to a piece of art.
It usually applies to 3-dimensional work and represents the amount of space the artwork contains. For example, a sculpture with a large volume will take up more physical space than a smaller sculpture.