What happens if the use of groundwater exceeds the rate of replenishment?
a. the depth of the water table increases
b. the water table is more likely to be polluted
c. the depth of the water table decreases
d. the water table remains unchanged

The answer is C. the depth of the water table decreases

Water table is the boundary between water-saturated ground and unsaturated ground.

When the groundwater dissapear faster  than it replenish, the depth will decreases, making it harder for people to gain access to the groundwater

The study of where things are 

Answer the above statement is correct (true);