The correct answer is D. All of these.
Vindhyan rocks are found in the districts of Jamui, Rohtas, and Aurangabad in Bihar. These rocks are known for their large reserves of non-metallic minerals, such as limestone, dolomite, and quartzite.
Limestone is a sedimentary rock that is composed of calcium carbonate. It is used in a variety of industries, including construction, manufacturing, and agriculture. Dolomite is a sedimentary rock that is composed of calcium magnesium carbonate. It is used in a variety of industries, including construction, manufacturing, and agriculture. Quartzite is a metamorphic rock that is composed of quartz. It is used in a variety of industries, including construction, manufacturing, and abrasives.
The Vindhyan rocks are a valuable resource for the state of Bihar. They provide jobs and economic opportunities for the people of the state. They also play an important role in the environment. The rocks help to protect the water supply and prevent soil erosion.