Explanation:

Surface tension:
Surface tension is a property of the surface of a liquid that allows it to resist external forces. It is caused by the cohesive forces between the molecules in the liquid. Surface tension is responsible for a variety of phenomena, such as the ability of certain insects to walk on water and the formation of droplets.

Droplet formation:
When a liquid droplet is formed, it naturally assumes a spherical shape. This is due to the property of surface tension. The cohesive forces between the liquid molecules act to minimize the surface area of the droplet. A sphere has the smallest surface area for a given volume, which is why droplets tend to form spherical shapes.

Adhesion:
Adhesion is the attraction between molecules of different substances. Although adhesion plays a role in various phenomena, such as capillary action, it does not directly influence the shape of a falling droplet.

Cohesion:
Cohesion is the attraction between molecules of the same substance. In the case of a falling droplet, cohesion is responsible for the spherical shape. The cohesive forces between the liquid molecules pull them inward, causing the droplet to assume a spherical shape.

Viscosity:
Viscosity is a measure of a fluid's resistance to flow. While viscosity can affect the behavior of a falling droplet, it does not directly determine its shape.

Conclusion:
In conclusion, the property of surface tension is responsible for the formation of spherical droplets. Surface tension is caused by cohesive forces between the liquid molecules and allows the droplets to minimize their surface area. Adhesion, cohesion, and viscosity play roles in various fluid phenomena, but only cohesion directly influences the shape of a falling droplet.