Question

an architect is building an underground storage of gasoline for a new gas station. to keep the gasoline from contaminating nearby groundwater sources, what kind of material should the architect use for the underground storage container? an impervious material sand gravel thick soil

Explanation:

An impervious material prevents the passage of fluids (like gasoline here). Sand, gravel, and thick soil are porous or permeable to some extent, allowing substances to seep through. To stop gasoline from contaminating groundwater, an impervious material is needed as it won't let the gasoline leak out.

Answer:

an impervious material