Gross Domestic Product (GDP) is divided into four categories: Consumption (C), Investment (I), Government expenditures (G), and Net exports ([X-M] or exports - imports). These categories help determine the growth or shrinkage of the economy.
The subject of this question is Social Studies. The question is asking about the four categories that make up Gross Domestic Product (GDP) and how they help economists and politicians determine whether the economy is growing or shrinking.
The four categories are:
Consumption (C): Includes the purchases of goods and services by individuals, such as lawn maintenance and doctors' visits.
Investment (I): Includes business purchases of new equipment and increases in inventories.
Government expenditures (G): Includes purchases of goods and services by the government, as well as salaries to employees and military personnel.
Net exports ([X-M] or exports - imports): The difference between the value of goods and services produced in the US and sold to foreigners (exports) and the value of goods and services produced by foreigners and sold in the US (imports).
By adding these four categories together, economists and politicians can analyze the different components of demand and determine the overall growth or decline of the economy based on changes in each category over time.