Which of the following is a stock concept ?

Capital

The correct answer is option (1) : Capital

Explanation :

Stock Concept: In economics, a stock concept refers to a quantity measured at a specific point in time. It represents a snapshot of a particular moment rather than a flow over time. Capital is a stock concept because it represents the total assets or wealth owned by an individual, business, or nation at a specific point in time.

The other options - Inventory investment, Income, and Expenditure-are flow concepts, representing changes or activities over a period of time.

• Inventory investment: This can be considered a flow concept, as it represents the additional investment made in inventory during a period. It reflects a change in the stock of inventory over time.

• Income and Expenditure: These are also flow concepts. Income refers to the earnings received over a period, while expenditure refers to the amount spent over a period. They represent inflows and outflows, not a stock at a specific point in time.