The answer is A. Granite.
Granite is an igneous rock, while the other options are all types of coal. Coal is a fossil fuel formed from the remains of ancient plants that have been buried and subjected to heat and pressure over millions of years. There are three main types of coal: lignite, bituminous coal, and anthracite. Lignite is the lowest grade of coal and is the most abundant type of coal in the world. It is soft and has a high moisture content. Bituminous coal is a higher grade of coal than lignite and is used to generate electricity and make steel. Anthracite
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