What is the difference between molecules of one and the same substance in different states of aggregation?

What is the difference between molecules of one and the same substance in different states of aggregation? a) mass b) size c) color d) nothing

Molecules of one and the same substance in different states of aggregation are no different.
In different states of aggregation between molecules, different strengths of intermolecular interaction and a different nature of their movement. In the solid state, the molecules perform only oscillatory motion around the equilibrium position. In a liquid state, molecules not only vibrate about an equilibrium position, but can also jump to an adjacent equilibrium position. In gases, molecules freely, chaotically move throughout the volume.