Final answer:
When the market price of fuel oil increases, refiners will likely decrease the supply of gasoline. A high tariff on imported broccoli will likely decrease the supply of imported broccoli. A decrease in the productivity of technology will decrease the supply of the item being considered.
Step-by-step explanation:
A. When the market price of fuel oil increases, refiners will likely decrease the supply of gasoline that uses the same input resources as fuel oil. This is because the cost of production for gasoline will increase, making it less profitable for refiners to produce and supply.
B. If the United States imposes a high tariff on imported broccoli, the supply of imported broccoli will likely decrease. This is because the high tariff will increase the cost of importing broccoli, making it less profitable for suppliers to supply.
C. A decrease in the productivity of technology will decrease the supply of the item being considered, assuming no increase in the availability of manufacturing materials. This is because a decrease in technology productivity will increase the cost of production, making it less profitable for producers to supply.
D. If the price of an input resource increases and there are no cheaper substitutes for the resource, producers of the item the resource is used to produce are likely to decrease the amount of the item produced. This is because the increase in the price of the input resource will increase the cost of production, making it less profitable for producers to produce and supply.
E. A subsidy is paid to vaccine producers in order to increase the supply of vaccine. This is because the subsidy reduces the cost of production for vaccine producers, making it more profitable for them to produce and supply.