Answer :
Rock A is a igneous rock , Rock B is a metamorphic rock , Rock C is a sedimentary rock and Rock D is a pumice rock .
How to distinguish between metamorphic sedimentary and igneous rocks?
Find crystals in igneous rocks. Examples of igneous rocks include gabbro, granite, pumice, and obsidian. Metamorphic rocks are rocks that have been altered by intense heat and pressure during their formation. One way to tell if a rock sample is metamorphic is to see if the crystals it contains are arranged in ribbons. Igneous, sedimentary, metamorphic. Igneous rock forms from molten rock deep within the earth. Sedimentary rocks are formed from layers of sand, silt, dead plants and animal skeletons. Metamorphic rocks that are formed when other rocks are changed by subterranean heat and pressure.
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