What is the correct order of density of states of matter?

Density is defined as the ratio of mass to volume. Thus, higher the volume lower occupied , lower is the density.

Now, as solids have high mass per volume ratio as the particles are tightly packed, they have highest density among all states of matter.

Liquids, in which less mass occupies more volume due to weaker intermolecular forces of attraction.

Gas have the least density.

Hence, the correct order is.

Solid> Liquid> Gas.

Thus, the correct option is C).