Final answer:
Labor is not considered a capital resource by economists because it refers to human effort, whereas capital refers to physical assets like machinery, equipment, and buildings used in production.
Step-by-step explanation:
Among the options provided, the one that would not be considered a capital resource by economists is labor. In the context of economics, capital refers specifically to physical capital, such as machinery, buildings, tools, and equipment used in the production of goods and services. For instance, in a pizzeria, this would include the pizza oven, cooking utensils, and the building itself. These items are used to produce the final product and contribute to the production process.
On the other hand, labor refers to the human effort, both physical and mental, provided by workers. This includes the time, effort, and skills that the workers bring to the production process. Labor is one of the other factors of production, but it is distinct from capital. The other options listed, such as land, a van, and machinery, can be considered capital goods as they are physical assets that aid in production.