N economy’s GDP falls, then it must be the case that the economy’s a. income and saving fall. b. income and market value of all production both fall. c. income falls and market value of all production rises.

If an economy's gross domestic product falls(GDP), it must be the case that the economy's income and saving falls.

Explanation:

Gross Domestic Product (GDP) is used to calculate the total market value of every finished goods and services that are produced within a country's borders at a particular period of time. Gross domestic product functions as the comprehensive scorecard of the economic health of a country measuring the overall domestic production of that particular economy.

When there is a fall in a country's gross domestic product, there will have been a fall on the country's income and savings. A lower income will bring about a reduction in the gross domestic product. Since higher income leads to higher savings and lower income is also proportional to lower savings, it therefore follows that a reduction in gross domestic product will be as a result of fall in income and savings.

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