The surface of the zone of saturation is known as

a. a well
b. the water table.
c. the water supply.
d. an aquifer.

B. the water table

Explanation:

The top surface of the zone of saturation or groundwater is known as phreatic surface. This phreatic surface is also known as water table. The degree of saturation for the soil below the water table is equal to 1, i.e. the soil is fully saturated.

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reflecting point a across the origin negates both of its coordinates.

b = (5, -4)