This very observation shows the property of liquid state.
As the intermolecular forces between molecules of liquid state is weaker in comparison to molecule of solid state . The molecules of liquid state are not so tightly packed that's why one can easily able to cut through it .

**The Observation:**

The observation that a diver is able to cut through water in a swimming pool demonstrates a certain property of matter. This property can be explained by considering the unique characteristics of both the diver and the water.

**The Property of Matter:**

The property of matter that is demonstrated in this observation is known as fluidity. Fluidity is the ability of a substance to flow and change shape when a force is applied to it. In the case of a diver cutting through water, the water molecules exhibit fluidity.

**Explanation:**

* **Fluidity of Liquids:**

Liquids, such as water, possess fluidity due to the nature of their molecular arrangement. The molecules in a liquid are loosely packed, allowing them to move and flow past each other. This property enables liquids to take the shape of their container and allows them to be easily displaced or deformed.

* **Viscosity:**

The degree of fluidity in a liquid is determined by its viscosity. Viscosity is the measure of a liquid's resistance to flow. Water has a relatively low viscosity, which means it flows easily. It is less resistant to external forces, such as the movement of a diver.

* **Force and Motion:**

When a diver moves through water, they exert a force on the water molecules in their path. This force is generated by the diver's body and the movements they make. As a result, the water molecules are pushed aside and displaced, creating a clear path for the diver to move through.

* **Interaction of Forces:**

The force exerted by the diver must overcome the cohesive forces between the water molecules. Cohesive forces are the attractions between the molecules of the same substance. However, in the case of a diver, the force they exert is greater than the cohesive forces present in water. This allows the diver to successfully cut through the water.

* **Surface Tension:**

It's worth mentioning that surface tension, another property of water, also plays a role in the diver's motion. Surface tension is the cohesive force between water molecules at the surface. It creates a thin "skin" on the water's surface, making it appear like a solid sheet. However, when the diver applies force, the surface tension is overcome, and they are able to enter the water.

In conclusion, the observation of a diver cutting through water in a swimming pool demonstrates the property of fluidity in liquids. Water's low viscosity, combined with the diver's applied force, allows the water molecules to be displaced, enabling the diver to move through the water.