Igneous rock is formed
A)by the solidification of molten rock.
B)when existing rocks undergo changes caused by increases in pressure, temperature, or both.
C)by the cementing together of solid grains, or by the precipitation of minerals out of water solutions, at or near the Earth's surface.
D)through weathering processes at or near Earth's surface.

Question

Quizplus · Accepted Answer

Igneous rock is formed by the solidification of molten rock. This usually happens deep beneath the Earth's surface, where heat and pressure change the magma into a solid form. Igneous rocks can also form on the surface when lava cools and solidifies.

Igneous Rock Is Formed