Final answer:
The water table never extends above the ground surface.
Step-by-step explanation:
The statement 'By definition, the water table never extends above the ground surface' is True. The water table is the level at which the ground is saturated with water.
It represents the upper boundary of the underground zone where water fills the spaces between soil and rock particles. The water table can fluctuate, but it generally lies below the ground surface and rises and falls with the topography of the land.