Lyophilic sols are more stable than Iyophobic sols. Lyophilic sols are solvent loving, whereas lyophobic sols are solvent hating. The dispersed phase in lyophobic sols has no attraction for the solvent. The dispersed phase in lyophilic sols has attraction for the solvent. The colloidal particles are solvated in the dispersed medium and therefore stabilised through solvation process. Therefore, the option (d) is correct.