Answer:
The correct answer is: expressed in the prices of a base year.
Explanation:
Real GDP is an inflation-adjusted measure to calculate changes in economic output. It calculates the value of final goods and services produced in an economy in a year expressed in the prices of a base year.
Real GDP does not include changes in the price of products as it is calculated at constant prices. Â
Nominal GDP, on the other hand, is calculated on the basis of current prices. It includes changes in prices and is not inflation-adjusted. That is why real GDP is preferred over nominal GDP.