Correct Option
The correct option is A tax on imports used by governments to regulate foreign trade.
Explanation
Trade barriers are government-induced restrictions on international trade. They are primarily designed to protect domestic industries from foreign competition, regulate the balance of payments, or ensure national security. These barriers are broadly classified into Tariff (taxes on imports) and Non-Tariff Barriers (quotas, embargoes, sanctions, and quality standards).
Option Analysis
- A subsidy given to domestic producers to boost exports. is incorrect: A subsidy given to domestic producers is a form of trade promotion or protectionism that lowers production costs, making exports more competitive. While it distorts trade, it is technically a fiscal incentive rather than a direct barrier to the entry of foreign goods.
- A tax on imports used by governments to regulate foreign trade. is correct: A tax on imports, known as a tariff, is the most common form of trade barrier. Governments impose tariffs to increase the price of foreign goods, thereby discouraging imports and encouraging the consumption of domestic products. This directly regulates foreign trade by altering market access.
- An agreement between two nations to eliminate all tariffs. is incorrect: An agreement to eliminate tariffs describes a Free Trade Agreement (FTA) or a Regional Trade Agreement (RTA). This represents the removal of trade barriers rather than the imposition of one.
- A restriction on the movement of skilled labour across borders. is incorrect: Restrictions on the movement of skilled labour relate to immigration policies and the movement of natural persons (Mode 4 under GATS). While this affects trade in services, the general definition of a "trade barrier" in the context of goods and commerce primarily refers to restrictions on the flow of products (tariffs and quotas).
Key Takeaway
Trade Barriers are policy measures, such as tariffs (taxes on imports) and quotas (quantitative limits), used by governments to restrict foreign trade and protect domestic industries.