The correct answer is: a) Coal and limestone.
Meghalaya is a state in northeastern India. It is the wettest place on Earth, receiving an average annual rainfall of 11,871 mm (467.4 in). The state is home to a number of ethnic groups, including the Khasi, Garo, and Jaintia peoples.
Meghalaya is a significant producer of coal and limestone. The state’s coal reserves are estimated to be 1.5 billion tonnes, and its limestone reserves are estimated to be 10 billion tonnes. Coal and limestone are used in a variety of industries, including power generation, steel production, and cement production.
Coal is a fossil fuel that is formed from the remains of ancient plants and animals. It is a major source of energy in the world, and it is used to generate electricity, power vehicles, and produce steel. Limestone is a sedimentary rock that is composed of calcium carbonate. It is used in a variety of industries, including construction, agriculture, and manufacturing.
Cotton and textiles are not significant producers in Meghalaya. Heavy machinery and pharmaceuticals are also not significant producers in Meghalaya.