Which of the following indicate that the goods and services are evaluated at some constant set of prices ?

Option 1 -> National Disposable Income measures total income available to households after taxes and transfers, not specifically at constant prices.

Option 2 -> Real GDP uses constant prices from a base year to measure the value of goods and services, eliminating inflation effects.

Option 3 -> Nominal GDP measures goods and services at current market prices, which change over time due to inflation.

Option 4 -> GNP_MP (Gross National Product at Market Prices) is typically measured at current prices unless specified as real.

Hence, Option 2: Real GDP -> Real GDP evaluates goods and services at constant prices (base year prices), which removes the effect of price changes and inflation. This allows for accurate comparison of economic output across different time periods by focusing on changes in actual quantities produced rather than price fluctuations. For example, if Real GDP uses 2010 as the base year, all production in subsequent years is valued using 2010 prices, making it possible to measure real economic growth. -> correct