Gross investment is a:Multiple Choiceflow, as is depreciation.flow, as is capital.stock, whereas depreciation is a flow.stock, whereas capital is a flow.

To determine the correct relationship among gross investment, depreciation, and capital, let's analyze the definitions of each term:

1. Gross Investment: This refers to the total amount spent on new capital assets (like machinery, equipment, buildings, etc.) within a given period. Since this involves measuring activity over time (yearly, quarterly, etc.), gross investment is considered a flow variable.

2. Depreciation: This is the reduction in the value of capital assets over time due to wear and tear, obsolescence, or age. Like gross investment, depreciation measures the flow of economic value lost within a period, thus it is also a flow variable.

3. Capital: This refers to the stock of assets at a specific point in time (e.g., the total worth of machinery owned by a company at the end of the year). As it captures a snapshot of assets rather than a measure of activity over time, capital is considered a stock variable.

Now, putting these together:

• Gross Investment: flow
• Depreciation: flow
• Capital: stock

Final Answer

Gross investment is a flow, depreciation is a flow, and capital is a stock.