The Correct 1 unit and 15 units are the outputs produced by domestic and foreign producers with free trade assuming there is no tariff.
<h3>What is a
free trade?</h3>
This refers to an international business policies that occurs when goods and services can be bought and sold between countries without tariffs, quotas or other restrictions being applied.
This policy tends to increase the volume of international trade among member countries and also allow them to increase their specialization in their respective comparative advantages.
Hence, in the graph given, the Correct 1 unit and 15 units are the outputs produced by domestic and foreign producers with free trade assuming there is no tariff.
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