Answer:
B. The part of an aquifer where the surface water reaches the water table
Step-by-step explanation:
The aquifers constantly lose water, both in natural way, and because of the human activities, but they also get more water. For the balance to be kept, and the aquifer to be able to exist and dry out, it has to receive water, at least as the amount it is losing. This happens at the recharge area. The recharge area is the area where the surface water is coming in contact with the aquifer. The surface water is providing the aquifer with new water reserves, and it comes from the rainfall, runoff, or maybe the rivers and streams. The water that evaporates, or is extracted, is replenished in this manner, so the aquifer has constant level of water reserves, except if there isn't dramatic changes in the climate, or the extraction is bigger than the replenishing.