Final answer:
The correct answer is d) capital goods.
Step-by-step explanation:
The correct answer is d)capital goods.
Flow variables are economic variables that are measured over a period of time. They represent the flow and movement of goods, services, or factors of production in an economy. Examples of flow variables include consumption, saving, and investment. Capital goods, on the other hand, are not flow variables. They are physical assets used in production, such as machinery, equipment, and buildings, which contribute to future production.