How is the total value of all goods and services produced by a country within a given period measured, regardless of where factors of production are located? A. Output per capita B. Inflation rates C. Standard of living D. Gross national product E. Aggregate output

The correct answer is D. Gross national product (GNP). GNP measures the total value of all goods and services produced by a country's residents, regardless of where the factors of production are located. It includes the output of domestic residents both within and outside the country's borders.