Correct option is D
Granite:
Granite is an igneous rock that is formed from the slow crystallization of magma beneath the Earth's surface.
It is extremely hard, durable, and resistant to weathering and scratching.
Its hardness is primarily due to the presence of quartz, which is one of the hardest minerals.
Comparison with Other Stones:
(a) Limestone: A sedimentary rock that is relatively soft and less durable compared to granite.
(b) Marble: A metamorphic rock that is harder than limestone but still softer than granite.
(c) Slate: A metamorphic rock, harder than limestone but less hard compared to granite.
