Which economic measure reflects the total market value of all final goods and services produced in a country?

The measure that reflects the total market value of all final goods and services produced within a country's borders is Gross Domestic Product, commonly referred to as GDP. GDP provides a comprehensive overview of a nation's economic performance and is calculated over a specific period, usually annually or quarterly. It includes all output produced by resident producers, regardless of the ownership of the production assets, thereby capturing the full scale of economic activity in a country.

This concept is critical as it serves as a key indicator of economic health and is used by policymakers, economists, and analysts to gauge the overall size and performance of an economy. GDP can be measured in nominal terms or real terms (adjusted for inflation), but the basic definition revolves around the value of final goods and services produced domestically.

Other measures such as Gross National Product focus on total economic output including income from abroad, while Net Domestic Product accounts for depreciation in the value of capital goods, and Real GDP adjusts for inflation, but they do not directly mirror the total market value of output within a country's borders like GDP does. Therefore, GDP is the most fundamental measure of a country's economic activity.