Final answer:
The relative size of government purchases and government spending varies depending on the context.
Step-by-step explanation:
The accurate statement about the relative size of government purchases and government spending is that the relative size of government purchases and government spending varies depending on the context.
Government purchases refer to the goods and services that the government buys to be used by its employees or for public use, such as computers, equipment, and infrastructure. Government spending, on the other hand, includes both purchases and transfer payments, which are payments made to individuals or organizations without receiving goods or services in return. The size of government purchases and government spending can differ based on factors such as economic conditions, government policies, and budget allocations.