Answer:
b. Van der Waals
Step-by-step explanation:
Non-bonding intermolecular interaction is simply the same as intermolecular forces between molecules. 
One such example from the given choice is the van der waals forces. 
- Van der Waals forces are weak forces of attraction joining non - polar molecules together. 
- They exist between layers of substances. 
- They are often described as non-bonding intermolecular interaction.