Surface tension is due to the __________ forces.

Answer: Option C

Cohesive Forces: Attractive forces between molecules of the same type are called cohesive forces.
Adhesive Forces: Attractive forces between molecules of different types are called adhesive forces.
Surface Tension: Cohesive forces between molecules cause the surface of a liquid to contract to the smallest possible surface area. This general effect is called surface tension.

Source : lumenlearning.com