Answer:
C: Cohesion allows droplets to form, and adhesion keeps then on the penny.
Explanation:
Before we do anything else, let's break down this question. Cohesion, the attraction of water and to its kind. Adhesion, attraction of water to other substances. From this, we could tell that C is the correct answer since cohesion is attracting to the droplets, and when it lands on the penny, adhesion takes place holding and balancing the droplet.
Hope you get it correct, and have a nice and a beautiful day!