Concept:The property that describes whether water can move through a rock is called permeability. A rock that blocks the passage of water is known as impermeable.
Explanation:A permeable rock has connected spaces that allow water to flow through it easily.
A porous rock contains many tiny pores, but these spaces may not be connected, so water may not flow freely through it.
An impermeable rock has no continuous openings or cracks, which prevents water from passing through easily.
An aquifer is a rock layer that can store water and transmit it, meaning it must be permeable.
Because the question describes a rock that water cannot easily pass through, the correct term is impermeable.
Answer:C. impermeable