Answer:
If the saturated zone is 15 meters deep, that area is the best to dig down so its A.
Explanation:
The saturated zone is the area under the ground where the water is stored in tiny spaces between rock, soil, sand, and gravel.
The water in this region flows freely through the pores within the geologic medium.
Most people dig a hole to insert pipes until this region identified with water for the purpose of boring and building wells.
These regions can be found after digging above hundred feet or just below the ground surface.
