Answer: The optimum tariff.
Explanation:
The optimum tariff maximizes the liquid benefit resulted by the improve of the nation’s terms of trade, althought the volume reduction of trades. Â
In one side, the terms of trade of the country who imposes the tariff improve. On the other side, those of the trade partner decrease. Â
It should be noted that even that the terms of trade of the country that impose the tariff improved, those are smaller if compared to the losses of the trade partner