Concept:Adhesive force is the attraction between molecules of different substances, such as a liquid and a solid.
Explanation:When a liquid is in contact with a solid, the molecules involved belong to two different materials.
The force that holds these unlike molecules together is known as an adhesive force.
For example, water sticking to the surface of glass is due to adhesion between water molecules and glass molecules.
Cohesive force, however, acts between molecules of the same substance, like water molecules attracting one another.
Since the question refers to the force between liquid molecules and solid molecules, it describes an interaction between different substances.
Therefore, this force is adhesive, not cohesive, magnetic, or repulsive.
Answer:A. Adhesive