Which of the following statements about trade policy is true?

The statement about trade policy that is true is:

a. A restrictive import quota increases a country's net exports.

Here's the reasoning:

• A restrictive import quota limits the quantity of goods that can be imported into a country, which typically reduces imports.
• When imports decrease while exports remain the same or increase, net exports (exports minus imports) will increase.

Therefore, a restrictive import quota can lead to an increase in a country's net exports.