Which of the following is NOT a type of trade barrier?

The identification of labor standards as not a type of trade barrier is accurate because labor standards typically refer to regulations concerning working conditions, wages, and other labor rights rather than restrictions on trade itself. Trade barriers are usually mechanisms that governments use to control the amount of trade across their borders, often to protect domestic industries.

Tariffs, quotas, and embargoes are all established forms of trade barriers. Tariffs impose taxes on imported goods, making them more expensive and less competitive compared to locally produced items. Quotas limit the quantity of a specific product that can be imported during a given timeframe, directly restricting supply. Embargoes are official bans on trade with particular countries or the exchange of specific products, often implemented for political reasons.

In summary, while tariffs, quotas, and embargoes serve to regulate international trade flows, labor standards focus more on the conditions under which labor is performed, highlighting their distinct nature from trade barriers.