Why do economic growth rates matter? A. When a country sustains high growth rates, life expectancy at birth increases. B. High growth rates coincide with improved living standards. C. High levels of sustained economic growth reduce infant mortality. D. All of the above. E. A and C only.

The answer is D. All of the above

Explanation:

Economic growth is an increase in the the production of economic goods and services, compared from one period of time to another. It can be measured in nominal or real (adjusted for inflation) terms.

The GDP growth rate measures how fast the economy is growing. It does this by comparing one quarter of the country's gross domestic product to the previous quarter. GDP measures the economic output of a nation.

The main components of components of economic growths are personal consumption, business investment, government spending and net trade.

When there is economic growth, there is improvement in the standard of living of the people, life expectancy at birth is increased, and it reduced infant mortality.

Hence all options to this question are correct.

therefore D is the correct option