Final answer:
Groundwater typically makes its way to the surface along the water table, which is the boundary between the unsaturated and saturated zones where the soil and rock pore spaces are filled with water. The correct option is A.
Step-by-step explanation:
When groundwater encounters a less permeable rock as it flows through the ground and makes its way to the surface, it typically does so along the water table. The water table is the boundary between the unsaturated and saturated zones, where below, the soil and rock pore spaces are completely filled with water.
Since the question describes a scenario where groundwater is encountering a less permeable layer and yet reaching the ground surface, it is likely flowing along the water table. The other options provided, such as an aquifer or perched water table, are more specific types of groundwater storage and do not necessarily reflect the dynamic surface where groundwater consistently travels to the Earth's surface.
Hence, Option A is correct.