The correct answer is Saurashtra.
Saurashtra is a peninsula in the western part of Gujarat, India. It is bordered by the Arabian Sea to the west, the Gulf of Kutch to the north, the Rann of Kutch to the east, and the states of Rajasthan and Madhya Pradesh to the south.
Saurashtra is a geologically diverse region, with a variety of rock formations. The most common rock type is limestone, which is found in abundance in the region. Limestone is a sedimentary rock that is formed from the accumulation of calcium carbonate. It is a valuable resource, as it is used in the production of cement, lime, and other building materials.
The limestone deposits in Saurashtra are some of the largest in India. They are estimated to be over 1 billion tonnes in size. The deposits are located in a number of different areas, including the districts of Rajkot, Jamnagar, and Junagadh.
The limestone deposits in Saurashtra are a valuable resource for the region. They are used in the production of cement, lime, and other building materials. The deposits also provide employment for a number of people in the region.
The other options are incorrect. Kutch is a desert region in the northwestern part of Gujarat. Banaskantha is a hilly region in the northern part of Gujarat. Surat is a city in the southern part of Gujarat.