Answer:
Specific tariff
Step-by-step explanation:
Specific tariff - it is referred to as the charge that is imposed by the US government on any imported item. it is applied per unit items. it can be considered as the tax that the US government levied on import items. it is referred to as a trade barrier focus to reduce the amount of import from tie-up countries
Fir above context, $0.54 as import tax is applied by the US government on imports of ethanol.