In economics, which of the following concepts is defined over a period of time?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Only Flow.
In economics, a flow is defined over a period of time, while a stock is measured at a specific point in time. Flows represent activities or quantities that occur or accumulate during a time interval, such as income, expenditure, or production. Stocks, on the other hand, are quantities that exist at a particular moment, like wealth, capital, or money supply. Therefore, when considering measurements over a period of time, the concept that applies is flow.