The correct answer is option 1 , i.e Phyllite. ● Metamorphic rock is a class of rocks that result from the alteration of pre-existing rocks in response to changing environmental conditions, such asvariations in temperature, pressure, and mechanical stress, and the addition or subtraction of chemical components. The pre-existing rocks maybe igneous, sedimentary, or other metamorphic rocks . ● The process of metamorphism does not melt the rocks, but instead transforms them into denser, more compact rocks. ● The metamorphosed form of various igneous, sedimentary and metamorphic rocks are mentioned below: ◦ Metamorphosed forms of igneous rocks are gneiss, schist, amphibolites . ◦ Metamorphosed forms of sedimentary rocks are slate, marble, quartzite . ◦ Metamorphosed forms of metamorphic rocks are phyllite, serpentinite . ● Phyllite is a type of foliated metamorphic rock created from slate that is further metamorphosed (metamorphosed form of slate) so that very fine grained white mica achieves a preferred orientation. ● It is primarily composed of quartz, sericite mica, and chlorite.