Metamorphic rock formation from sedimentary rocks is caused by heat and pressure. After millions of years in transformation, the heat and pressure of the Earth's crust changes the physical and chemical properties of rock creating new textures to the rock.

Question

Metamorphic rocks are separated into two categories by their texture, foliated rocks and non-foliated rocks. The foliation or _______________that occurs in metamorphic rock is because of the immense __________________ found deep within the Earth's interior.
Responses
A blending, differential stressblending, differential stress
B blending, decreased pressureblending, decreased pressure
C layering, differential stresslayering, differential stress
D layering, decreased pressureMetamorphic rock formation from sedimentary rocks is caused by heat and pressure. After millions of years in transformation, the heat and pressure of the Earth's crust changes the physical and chemical properties of rock creating new textures to the rock.

Metamorphic rocks are separated into two categories by their texture, foliated rocks and non-foliated rocks. The foliation or _______________that occurs in metamorphic rock is because of the immense __________________ found deep within the Earth's interior.
Responses
A blending, differential stressblending, differential stress
B blending, decreased pressureblending, decreased pressure
C layering, differential stresslayering, differential stress
D layering, decreased pressure

Answer 1

The correct answer is:

C layering, differential stress

So the complete sentence would read: "The foliation or layering that occurs in metamorphic rock is because of the immense differential stress found deep within the Earth's interior."

This is accurate as foliation refers to the layered appearance of certain metamorphic rocks, which is primarily caused by the pressure applied in different directions (differential stress) during the metamorphic process.