Answer:
a. is a measure of inflation
Explanation:
The GDP or gross domestic product is a macroeconomic measure that expresses the monetary value of the production of goods and services of final demand of a country (or a region) during a certain period of time.
It is one of the most widely used macroeconomic measures. It falls within what is called national accounting.
There are two types of GDP:
Nominal GDP: this is the monetary value of all goods and services produced by a country in the year in which the goods themselves are produced. If the nominal GDP is studied over time, in an inflation situation, a substantial increase in this indicator results, resulting in an increase in prices.
Real GDP: is the monetary value of all goods and services produced by a country at constant prices. This indicator is taken from constant prices as the basis for comparisons.