Answer to Question 4:

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.