Which of the following is considered the most effective barrier to trade?

Question

Quizplus · Accepted Answer

Quotas limit the amount of a specific good that can be imported, making it the most effective barrier to trade as it directly limits competition from foreign producers. Tariffs, export subsidies, and licensing requirements also serve as barriers to trade, but they allow for some level of imports to enter the market. Product quality standards can also serve as a barrier to trade, but typically only affect certain industries or products rather than being a comprehensive barrier to all imports.

Which of the Following Is Considered the Most Effective Barrier