Question

The Columbia Plateau exposes dark rock that spans the states of Washington, Oregon, and Idaho. What made this vast

plateau?
O layers of continuous basaltic lava flow that cooled and hardened
O layers of metamorphic rock that eroded and extruded from deep in the earth's crust
O layers of sedimentary rock that deposited, like the Grand Canyon
O layers of batholith that eroded and became exposed

Answer 1

It’s layers of batholith that eroded and became exposed