The correct answer is China clay.
China clay is a type of clay that is used in the ceramics industry to make porcelain, pottery, and other ceramic products. It is a white, fine-grained clay that is rich in kaolinite, a type of mineral. China clay is found in many parts of the world, including India, China, the United States, and Brazil.
Bauxite is a type of ore that is used to make aluminum. It is a reddish-brown ore that is found in many parts of the world, including Australia, Brazil, China, and Guinea.
Copper is a type of metal that is used in many different industries, including the construction industry, the electrical industry, and the jewelry industry. It is a reddish-brown metal that is found in many parts of the world, including Chile, Peru, and the United States.
Gypsum is a type of mineral that is used in many different industries, including the construction industry, the agriculture industry, and the medical industry. It is a white, powdery mineral that is found in many parts of the world, including Canada, China, and the United States.