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. The company was established in 1964 and is headquartered in Thiruvananthapuram, Kerala, India. KMML has two major plants, one at Chavara in Kollam district and the other at Valiyathura in Thiruvananthapuram district. The company produces a variety of products from mineral sands, including ilmenite, rutile, zircon, and monazite. These products are used in a variety of industries, including the paint, plastics, and ceramics industries.
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.