Under the WTO agreement, $q,(2\mathrm{.}08$pts$)$

a dispute resolution mechanism allows countries to bring grievances to the WTO against countries that levy inappropriate trade discrimination measures

there is no dispute resolution mechanism except for trade involving environmental products

countries are allowed to place trade barriers on member countries with no particular justification, because like GATT the WTO has no enforcement mechanism

tariffs are permitted to be levied by developed countries against developing countries but not against each other

The goal of a $q,$ is to abolish all tariffs among member countries. $(2\mathrm{.}08$pts$)$

custom union

common market

free trade agreement

common internal tariff