What does GDP growth refer to in economic forecasts?

GDP growth primarily refers to the increase in the total market value of all goods and services produced within an economy over a specific period, usually measured annually or quarterly. This metric is crucial for assessing the economic performance of a country. When GDP increases, it indicates that the economy is expanding, which often correlates with improved living standards, increased investment, and potential job creation. This growth is fundamental to economic forecasts, as it provides insights into future economic activity, investment opportunities, and policy making.

In contrast, the other choices focus on different aspects of economic indicators. Measurement of inflation rates pertains to the overall change in price levels within an economy and does not directly signify economic growth. Evaluation of employment rates concentrates on workforce participation and job availability but does not directly measure the total economic output. Assessment of currency strengths involves understanding how a currency's value compares to others, which is significant for trade but does not reflect the overall production capacity of an economy. Hence, the correct choice encompasses the fundamental concept of economic growth as it relates to GDP.