Concept:
Rocks are classified into three major categories based on their formation: igneous, sedimentary, and metamorphic rocks. Metamorphic rocks are formed when pre-existing rocks undergo transformation due to intense heat and pressure.
Step 1:
Metamorphic rocks originate from already existing rocks that change their physical and chemical properties under high temperature and pressure conditions.
Step 2:
Marble is formed when limestone undergoes metamorphism. Due to recrystallization of calcite minerals, limestone transforms into marble.
Step 3:
• Basalt is an igneous rock.
• Limestone is a sedimentary rock.
• Granite is also an igneous rock.
Step 4:
Therefore, the correct metamorphic rock among the given options is Marbles.