Which of these items are stocks and which are flows: 1) your
sense of humour, 2) the Anglican Church, 3) your computer, 4)
the aggregate quantity of goods and services produced in the
United States last year.
1. All of the items are stocks.
2. None of the items are stocks.
3. Items 1), 2) and 3) are stocks.
4. Items 3) and 4) are stocks.