The best explanation as to why water forms beads on leaves with waxy cuticles would be the strong intermolecular forces between water molecules. The correct option would be C.
There are 2 types of molecular forces:
Adhesive force: forces between molecules of different substances
Cohesive force: forces between molecules of the same substance.
When the cohesive force between molecules is greater than the adhesive force, the molecules will cling more to themselves than to the molecules of different substance.
In other words, water forms beads on waxy surface of leaves because the cohesive force holding the water molecules together is stronger than the adhesive force between the water molecules and the waxy surface of the leaves.
