Concept:Granite is a coarse-grained igneous rock made of large visible crystals of quartz, feldspar, and mica.
Explanation:Granite forms when molten magma cools slowly beneath the Earth’s surface.
This slow cooling allows large mineral crystals to grow.
The three principal minerals commonly seen in granite are quartz, feldspar, and mica.
These minerals are large enough to be identified with the naked eye.
Limestone is a sedimentary rock composed mainly of calcium carbonate.
Basalt is a fine-grained volcanic rock with tiny crystals.
Coal is an organic sedimentary rock formed from plant remains.
Therefore, granite is the correct answer because it is heterogeneous and visibly contains quartz, feldspar, and mica.
Answer:D. granite