The correct answer is A) The federal government is authorized to tax imports and exports.
Congress has the ability to tax thanks to the US Constitution. With this in mind, Congress does have the ability to put a tax on imported and exported goods. This has been used quite often in American society, as the federal government has put tariffs on imported goods in the 1820's, 1880's, etc. The goal of these taxes on imported goods is to increase the price of foreign goods. This increase in price of foreign goods will make it more likely that citizens buy goods made in the US, as they will be cheaper than foreign goods. Tariffs are often implemented in times where American businesses need assistance when competing against foreign nations.
