14. What is included when measuring a country's gross domestic product (GDP)?
a. a homeowner's cost of labor when performing his or her own repairs
b. a consumer's purchase of a new bicycle idani nommsvog 291612 besinU or
C.
a consumer's purchase of clothes at a second-hand storeni diz0q9b29bivo
d. a car manufacturer's purchase of tires for the production of a new car