Concept:In a capillary tube, the liquid level depends on whether the liquid wets the glass or not.
Explanation:When a narrow tube is dipped into a liquid, capillary action occurs.
If the liquid wets the glass, adhesive forces dominate and the liquid rises above the surrounding liquid level.
If the liquid does not wet the glass, cohesive forces dominate and the liquid falls below the surrounding liquid level in the tube.
Therefore, the correct statement is that the liquid falls below the liquid level if it does not wet the glass.
Answer:C. falls below the liquid level if the liquid does not wet the glass.