Biology

The correct answer is: B.cohesion.

When you add drops of water to a coin, each drop sticks to the other water because of cohesion. Cohesion is the force that holds water molecules together, so the molecules in each drop are attracted to one another, causing the drops to merge or stick together.

Here’s a breakdown of the other options:

A.Adhesion: This refers to the attraction between water molecules and other surfaces (like the coin). While adhesion helps the water stick to the coin, the reason the drops stick to each other is due to cohesion between the water molecules.