Which statement describes the formation of metamorphic rocks?

Question

Rocks beneath the surface melt.
Rocks above the surface are eroded.
Rocks beneath the surface are forced toward the mantle.
Rock layers near the surface decrease pressure on layers beneath them.

Answer 1

The statement that best describes the formation of metamorphic rocks is:

Rock layers near the surface decrease pressure on layers beneath them.

Metamorphic rocks are formed when existing rocks (either igneous, sedimentary, or other metamorphic rocks) are subjected to high pressure and temperature conditions within the Earth, causing physical and chemical changes without the rock actually melting. The decreasing pressure from overlying rock layers can play a role in this process, particularly when rocks are uplifted or exposed.