The correct answer is: c. Tertiary rocks limestone, shale.
Dharwar rocks are Precambrian rocks, while Vindhyan rocks are Paleozoic rocks. Tertiary rocks are the youngest of the Phanerozoic rocks, and they include limestone, shale, and sandstone. Quaternary rocks are the youngest of all the rocks, and they include alluvium, glacial deposits, and volcanic deposits.
Limestone is a sedimentary rock that is composed of calcium carbonate. It is formed when the remains of marine organisms, such as coral and algae, accumulate on the seafloor. Shale is a sedimentary rock that is composed of clay minerals. It is formed when clay particles are deposited in water and then compacted and cemented together. Sandstone is a sedimentary rock that is composed of sand-sized grains of quartz. It is formed when sand grains are deposited in water and then compacted and cemented together.
Alluvium is a sedimentary deposit that is formed when water carries sediment and then deposits it in a new location. Glacial deposits are sedimentary deposits that are formed when glaciers move and deposit sediment. Volcanic deposits are sedimentary deposits that are formed when volcanoes erupt and deposit ash and lava.