The location of the water table is subject to change true or false

True.

The location of the water table is subject to change is considered true because these are dependent on the seasons of the current environment.
The four seasons happen because of the tilt of the earth axis. During different times of the year, the rays of the sun hit different parts of the earth more directly. The angle of the earth's tilts the northern hemisphere towards the sun during summer season while the southern hemisphere is tilted away causing winter. 

The answer would be sand and gravel