Which of the following items is included in GDP?

A. the sale of stocks and bonds.

B. All the above are included in GDP.

C. the sale of services such as those performed by a doctor.

D. the sale of used goods.

B. All the above are included in GDP.

Explanation:

GDP is a measure of an economy's total production and in most cases, it is used to determine how developed or how grown a certain economy is. To calculate the GDP, we take into consideration every form of production within the country. Factors such as consumption expenditure, private domestic investment, government spending, imports and exports are all determinants of GDP. Therefore, the sale of stocks and bonds, sale of services and the sale of used goods, collectively are included in calculation of GDP. Hence the correct answer is B.