The correct answer is D. Geraniol.
Ceramics are non-metallic, inorganic materials that are made from naturally occurring or synthetic raw materials. They are typically formed by heating a mixture of these materials to a high temperature, and then cooling them slowly. This process causes the materials to bond together and form a solid mass.
Beryllia, zirconia, and alumina are all examples of ceramics. They are all hard, strong, and resistant to heat and corrosion. They are used in a variety of applications, including electrical insulators, bearings, and cutting tools.
Geraniol is a natural oil that is found in many plants. It is used in perfumes, cosmetics, and other products. It is not a ceramic.