Which of the following is an example of capital?

A factory is considered an example of capital because it represents a durable asset that is used in the production of goods and services. Capital, in economic terms, is one of the factors of production and includes physical assets that contribute to the production process. A factory provides the necessary infrastructure and equipment for manufacturing products, thereby facilitating the efficient use of labor and raw materials.

In contrast, other options like a piece of land and raw materials are classified differently in the context of production. Land is a resource but not capital; it is a natural resource used in the production process. Similarly, raw materials are also inputs in production but are not classified under capital as they are transformed into finished goods rather than serving as a durable asset that aids production. A laborer represents human capital, referring to the skills and labor contributed to the production process, but again, it falls outside the definition of physical capital. Thus, the factory distinctly fits the definition of capital as a crucial element in the production framework.