A REAL INCREASE IN THE VOLUME AND SCALE OF MATERIAL AND NON-MATERIAL GOODS (BENEFITS)CREATED OVERACLEARLY DEFINED PERIOD OF TIME IS a. GDP b. economic growth c. GNP d. national income

The correct answer is b. economic growth.<br /><br />Economic growth refers to a real increase in the volume and scale of material and non-material goods (benefits) created over a clearly defined period of time. It is typically measured by the percentage change in real gross domestic product (GDP) or real gross national product (GNP) over a specific time period, usually a year.<br /><br />GDP and GNP are measures of the total value of goods and services produced within a country during a specific period, while national income refers to the total amount of money earned by the residents of a country, including wages, profits, rents, and taxes minus subsidies.