The correct option is D Solid < Liquid < Gas
The particles in solids are tightly packed with negligible spaces between them while in gases, the particles are far apart and have large interparticle spaces. In liquids, the interparticle spaces are intermediate of the spaces in solids and gases.
Thus, the correct order of interparticle spaces is as follows: Solid < Liquid < Gas
Hence, the correct answer is option (d).