Which tool is best suited for leveling surfaces?

The tool that is best suited for leveling surfaces is the level. A level is specifically designed to determine whether a surface is horizontal (level) or vertical (plumb) by using a bubble or electronic mechanism to indicate alignment. It provides a clear visual indication of whether an object is aligned correctly and is essential for construction and carpentry tasks to ensure that surfaces are even and accurately positioned.

On the other hand, a plumb bob is used for establishing a vertical reference line, while a square is utilized to check angles, ensuring that corners are at 90 degrees. A measuring tape is intended for measuring distances or lengths rather than determining the levelness of surfaces. Thus, the level is the most appropriate choice for leveling surfaces.