The correct answer is option 4, Arkose. Arkose is a type of sedimentary rock that is composed primarily of quartz grains and fragments of feldspar. Sedimentary rocks are formed through the process of sedimentation, where particles and fragments of rocks are deposited and compacted over time. Granite, option 1, is an intrusive igneous rock, formed from the cooling and solidification of molten magma deep within the Earth`s crust. Chamockite, option 2, is a type of metamorphic rock. Basalt, option 3, is an extrusive igneous rock formed from lava that has cooled on the Earth`s surface. Therefore, the correct answer is option 4, Arkose, as it is the only rock among the options that is classified as sedimentary.