Final answer:
Groundwater flows toward a cone of depression, which is formed by the pumping of water from a well that causes a localized drop in the water table.
Step-by-step explanation:
The correct answer to which of the following choices best describes what happens to the flow of groundwater if a cone of depression is formed is C) Groundwater flows toward the cone of depression. When groundwater is pumped from a well, it results in a lowering of the water table surrounding the well, creating a cone-shaped depression in the water table. Groundwater naturally moves from areas of higher elevation to areas of lower elevation, and the formation of a cone of depression is essentially a new, lower elevation point. Therefore, the groundwater will flow toward this point in an effort to equalize the water table level.