Biology

The correct answer is: C.cohesion.

When you stretch water with a toothpick (for example, if you're able to lift a small film of water on the tip of the toothpick), it is due to cohesion. Cohesion refers to the attractive forces between water molecules themselves, which allow the water to stick together and form a continuous "film" that can be manipulated.

Here's how the other terms apply:

A.Adhesion: This is the attraction between water molecules and other surfaces. While adhesion could help water stick to the toothpick, the ability to stretch water is due to cohesion between water mo...