Question

Refer to the above model. What processes are occurring along arrows D and E to turn both sedimentary rocks and igneous rocks into metamorphic rocks?

A. melting and cooling

B. erosion and deposition

C. high temperatures and cementation

D. extreme heat and pressure

Answer 1

D - extreme heat and pressure

In order for a rock to be transformed and metamorphic, it has to experience extreme heat and pressure, which is what is being shown in the diagram.