Question

Which of the following BEST describes a process by which metamorphic rock becomes igneous rock?

weathering into sediments, then eroding
compacting under pressure and cementing
changing shape under heat and pressure
melting completely, then cooling

Answer 1

melting completely, then cooling

Step-by-step explanation:

If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.

Answer 2

changing shape under heat and pressuremelting completely, then cooling

Step-by-step explanation: