Answer:
a. either the economy must be producing a larger output of goods and services, or goods and services must be selling at higher prices, or both
Step-by-step explanation:
Total Spending is the total values of goods & services produced & transacted ( bought, sold ) in an economy, during a period of time.
Total Spending = Price of goods,services x Quantity of goods,services
So, if the total spending increases : It implies that either the quantity of goods & services, or their prices, or both have increased. As, amount spent is a product of both of them.