The correct answer is: A) Quartzite
Quartzite is a hard, durable stone that is often used for making tools. It is found in many parts of the world, including Telangana. Quartzite was commonly used for making tools in prehistoric Telangana because it is a strong and durable material that can be easily shaped into tools.
Granite is a type of igneous rock that is composed of quartz, feldspar, and mica. It is a very hard and dense rock that is not easily shaped into tools. Limestone is a type of sedimentary rock that is composed of calcium carbonate. It is a soft rock that is not easily shaped into tools. Obsidian is a type of volcanic glass that is very sharp and can be used to make tools. However, it is not as strong as quartzite and is more likely to break.
Therefore, the correct answer is: A) Quartzite