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:

i would say iii (3) because in order to compare a price you have to use as a reference other near stores because it's its

hope i explained myself