Answer:
d.quartzite
Explanation:
Generally, metamorphic rock formation begin in the earth's interior . The changes affects the texture, mineral constituents or both. Usually, the transformation occurs in the solid state . Temperature , pressure and stress plays a major role in the formation of metamorphic rocks. A typical example of a metamorphic rock is marble . Marble is formed from it parent rock, limestone .
Considering texture, metamorphic rock can be classified as Nonfoliated and Foliated.
A metamorphic rock is said to be foliated when it has a planar texture.
All the other rocks have a planar texture except for quartzite which is hard as a single quartz crystal and is difficult to crush or break. That is the picture of a quartz
