The correct option is
A Major mineral resources
The major minerals mined in Tamil Nadu are limestone, bauxite, gypsum, lignite (brown coal), magnesite, and iron ore.
Tamil Nadu is the leading holder of country's resources of vermiculite, molybdenum, dunite, rutile, garnet, and ilmenite. The State accounts for the country's 79% vermiculite, 65% dunite, 52% molybdenum, 48% garnet, 30% titanium mineral, 25% each sillimanite & magnesite and 16% fire clay resources.
Hence, Lignite, vermiculite, Garnet, Zircon, Graphite, Ilmenite, Rutile, Monazite and Magnesite are the major mineral resources of Tamil Nadu and therefore, option A is the correct answer