What happens in the part labelled X? Study the following diagram. What is the volume of the stone?

The diagram shows the human digestive system, and the arrow labeled X points to the large intestine.

The main function of the large intestine is the absorption of water and electrolytes from the remaining indigestible food matter, and the compaction of waste into feces.

• A. Absorption of food: This primarily occurs in the small intestine.
• B. Absorption of water: This is a key function of the large intestine.
• C. Temporal storage of food: Food is temporarily stored in the stomach.
• D. Temporal storage of water: While water is present, its primary role is absorption, not long-term storage.

The most significant process occurring in the large intestine is the absorption of water.

What happens in the part labelled X? $\boxed{\text{B Absorption of water}}$.

The diagram illustrates the water displacement method, where a stone is submerged in water in a Eureka can, causing water to overflow into a measuring cylinder. The volume of the displaced water is equal to the volume of the stone.

In diagram B, the measuring cylinder shows that the volume of the displaced water is $10 \text{ cm}^3$.

Since the volume of the displaced water is equal to the volume of the stone, the volume of the stone is $10 \text{ cm}^3$.

What is the volume of the stone? $\boxed{10 \text{ cm}^3}$.