A decrease in the price of a good will cause a movement along the demand schedule to a higher quantity demanded.

Which of these is an example of depreciation?

(A) A clothing store owner reduces the price of a belt by $10 to encourage sales. (B) A worker's truck breaks down more often after 80,000 miles of driving. (C) An employer fires a worker for repeatedly arriving late to work. (D) A share of stock declines in value over several months.

Which of these is assumed to be constant along an aggregate supply curve?

a. The price level in an economy b. The exchange rate between the domestic and a foreign currency c. The state of technology used in production d. The unemployment rate e. The real GDP