Why does the teardrop stay suspended at the edge of the leaf?

The teardrop stays suspended at the edge of the leaf due to surface tension, which is the cohesive force between the liquid molecules that causes them to behave like a stretched elastic membrane. Additionally, the hydrophobic properties of the leaf's surface repel water, preventing the droplet from spreading or rolling off. This combination of surface tension and the leaf's characteristics allows the droplet to maintain its shape and stay perched at the edge.