What is a sudden shortage of a good called? supply shock rationing spillover costs black market

Option “A” Supply shock is the correct answer because supply shock refers to a sudden fall in the availability of quantity which is basically caused by changes in price. However, the supply shocks can be negative and positive. The negative supply shocks represent the shortages of the commodity. The sudden fall in production increases the price of commodity.

i think it would be c.

hope i'm correct

explanation:

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.