Gross national product (GNP) measures what aspect of an economy?

Gross National Product (GNP) measures the total economic output produced by a nation's residents, regardless of whether that production takes place within the country's borders or abroad. It includes the value of all goods and services produced by the residents of a nation during a specific period, typically a year. This means that GNP focuses on the economic contributions of individuals and corporations who are citizens or are based in that nation, regardless of where they operate.

In contrast to GDP, which measures the total economic output within a country’s borders, GNP emphasizes the role of the residents themselves, capturing the economic activity associated with them, such as income from investments held abroad and profits sent back home. This distinction highlights the importance of national identity in the economic contributions being measured.

The other choices do not address the concept of GNP effectively. Total tax revenue, the economic output of foreign nations, and the unemployment rate pertain to different economic indicators and do not reflect the focus of GNP on output generated by a nation's residents.