A zone within the earth that restricts the flow of groundwater from one aquifer to another?

Correct option is B

An aquiclude is a geological formation or zone within the Earth that has very low or negligible permeability, meaning it does not allow groundwater to flow freely through it. Because of this property, it restricts or blocks the movement of groundwater from one aquifer to another.

Key points:

Aquifers are water-bearing layers that allow groundwater storage and movement.

An aquiclude may hold water within its pores but does not transmit it in appreciable quantities.

Common examples of aquiclude materials include clay, shale, and dense rocks.

Aquicludes act as barriers between aquifers, controlling groundwater flow and separation.