The correct answer is D. Electrical.
Mica is a mineral that is used in a variety of electrical applications, including capacitors, transformers, and switches. It is a good insulator and has a high dielectric strength, which makes it ideal for these applications. Mica is also used in the production of glass and ceramics, as well as in the construction industry.
Cement is a mixture of limestone, clay, sand, and iron ore that is used to make concrete. Glass is a hard, brittle, and transparent substance that is made from silica sand. Pottery is a type of ceramic that is made from clay and is often decorated with patterns or designs. Iron and steel are two types of metal that are made from iron ore.
Mica is not used in the production of cement, glass, or pottery. It is also not used in the production of iron and steel. However, it is used in the production of electrical components, such as capacitors, transformers, and switches.