The correct answer is: a) Processing of Mineral Sands.
Kerala Minerals and Metals Ltd. (KMML) is a state-owned company involved in the processing of mineral sands. It is located in the state of Kerala, India. The company was established in 1964 and is headquartered in Thiruvananthapuram. KMML is the largest producer of mineral sands in India. The company produces a variety of products, including ilmenite, rutile, zircon, and monazite. These products are used in a variety of industries, including the paint, plastics, and ceramics industries. KMML is also a major exporter of mineral sands.
Option b) Gold Mining is incorrect because KMML is not involved in gold mining.
Option c) Granite Quarrying is incorrect because KMML is not involved in granite quarrying.
Option d) Oil Drilling is incorrect because KMML is not involved in oil drilling.