Answer:
d)any or all of these forces
Explanation:
A solute and solvent may interact with each other with the help of any of the given forces i.e. dipole/dipole forces, ion/dipole forces and van der Waals forces. The kind of interaction between the solute and solvent depends upon their nature. The stronger is the bond between the solute and solvent, the better will be the solubility.
For example: When heptane and hexane form a solution the most predominant force between them is london dispersion force. But when salt i.e. NaCl dissolves in water the most pre-dominant force between them is dipole-dipole attraction.
