The correct answer is: a) Quartzite.
Quartzite is a hard, durable rock that is often used to make tools. It is found in many parts of the world, including Tamil Nadu. Paleolithic tools made of quartzite have been found in many different parts of Tamil Nadu, including the districts of Coimbatore, Madurai, and Tirunelveli. These tools date back to the Lower Paleolithic period, which is from about 2.5 million to 300,000 years ago.
Quartzite is a good material for making tools because it is hard and durable. It is also easy to shape and sharpen. Paleolithic tools made of quartzite include axes, knives, and scrapers. These tools were used for a variety of purposes, such as hunting, gathering, and woodworking.
The other options are incorrect because they are not as hard or durable as quartzite. Granite is a hard rock, but it is not as durable as quartzite. Basalt is a hard and durable rock, but it is not as easy to shape and sharpen as quartzite. Limestone is a soft rock that is not suitable for making tools.