Which of the following is a Metamorphic rock?
A. Basalt
B. Limestone
C. Marble
D. Sandstone
To determine which of the given options is a metamorphic rock, let's first understand what metamorphic rocks are. Metamorphic rocks are rocks that have undergone transformation due to heat, pressure, or chemical reactions deep within the Earth's crust. This transformation causes the original rock to change its mineral composition and texture.
Now, let's look at the given options:
A. Basalt – Basalt is an igneous rock that forms from the solidification of lava. It is not a metamorphic rock.
B. Limestone – Limestone is a sedimentary rock that forms from the accumulation of remains of marine organisms. It is not a metamorphic rock.
C. Marble – Marble is a metamorphic rock that forms from the recrystallization of limestone. The original limestone undergoes intense heat and pressure, causing it to transform into marble.
D. Sandstone – Sandstone is a sedimentary rock that forms from the accumulation and cementation of sand grains. It is not a metamorphic rock.
Based on the explanation above, the correct answer is C. Marble.