Which of the following measures reflects the price index of all goods produced within a country's economy?

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Index of wholesale prices (WPI)Index measuring consumer price changes (CPI)Gross Domestic Product (GDP) deflatorIndex of producer prices (PPI)

Explanation

The GDP deflator captures the price changes of all domestically produced goods and services in the economy, unlike the wholesale price index (WPI) or consumer price index (CPI), which cover specific segments of prices.