Which of the following is classified as organic?

The classification of substances as organic typically refers to compounds that contain carbon and are often associated with living organisms or biological processes. Among the choices presented, pork qualifies as organic because it is derived from a living organism, specifically pigs. As an animal product, pork is composed of a variety of organic molecules, including proteins, lipids, carbohydrates, and nucleic acids, all of which contain carbon as a key element.

In contrast, salt is primarily composed of sodium and chloride ions and does not contain carbon, classifying it as an inorganic compound. Soil minerals, which mainly consist of inorganic substances like various metal oxides and silicates, also lack carbon. Likewise, copper is a pure metallic element and does not qualify as organic, as it too does not contain carbon. Thus, pork stands out as the only organic choice in this context, characterized by its biological origin and composition.