Question

Which one of the following is included in stock?

• A. Quantity of money
• B. Wealth
• C. Quantity of wheat stored in warehouse
• D. All of these

Hint:

A simple test for a stock variable: can you measure it with a "snapshot" at a single moment? If yes, it's a stock.

Answer 1

The Correct Option is D

A stock variable is a quantity measured at a specific point in time. Let's analyze the options:

(A) Quantity of money: The total amount of money in an economy on a specific date is a stock.
(B) Wealth: A person's or nation's total assets at a point in time is a stock.
(C) Quantity of wheat stored: The amount of wheat in a warehouse on a particular day is a stock.
In contrast, a flow variable is measured over a period of time (e.g., income per month). All the given options are quantities measured at a point in time and are therefore stock variables.