The graph that shows the relationship of the density and the volume is option C
Why is the density constant?
Being an intrinsic property, density is determined solely by the kind of material and not by its quantity. The density of a substance is constant regardless of its quantity; it is determined by the properties of the material.
The ratio of mass to volume stays constant, leading to a constant density, as long as the substance's composition doesn't change.
Hence, the graph that shows the relationship of the density and the volume is option C.