What is organic chemistry primarily concerned with?

Organic chemistry is primarily concerned with carbon compounds due to the unique properties of carbon that allow it to form a vast array of structures. Carbon can form four covalent bonds with other atoms, enabling the creation of a diverse range of molecules, from simple hydrocarbons to complex biomolecules like proteins, nucleic acids, and carbohydrates. This versatility is crucial for the formation of the building blocks of life, making the study of organic chemistry essential in fields such as biochemistry, pharmaceuticals, and materials science.

In contrast, the other options are related to different branches of chemistry. Metals are primarily studied in inorganic chemistry, which deals with non-carbon elements and their compounds. Inorganic substances include minerals and metals, which are distinct from organic compounds. Therefore, the focus of organic chemistry on carbon compounds highlights its significance in understanding both the structure and function of vital biological molecules.