Consumption, investment, government spending, exports, and imports are: a. all complementary elements of a market-orientated economy. b. some of the opposing elements found in a market-orientated economy. c. all components of aggregate demand. d. some of the building blocks of keynesian analysis.

C. all components of aggregate demand.

Aggregate Demand is a macroeconomic term that measures the demand for goods and services of by an entire economy. The goods demanded and consumed in an economy is measured by five components.

Consumption(C): refers to the amount spent by households on products and services.

Investment Spending (I):  refers to the investment in capital equipment, buildings and inventory by businesses.

Government Spending (G): on goods and services excluding transfer payments.  

Exports (X): represents the demand from other countries and represents.  

Imports (M): represent the demand of those products and services that can’t be produced domestically.

The aggregate demand (AD) is calculated with the following formula:

metallurgy is your answer

the "study of metals and the process of refining ("

note that it says metal. metallurgy has the word "metal" in it, and so is most likely your answer (and is your answer).

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