Final answer:
Governmental actions that discourage imports and block the market include tariffs, subsidies, tax incentives, and duties. Free trade zones, on the other hand, promote trade by creating designated areas where goods can be imported or exported without the usual trade barriers.
Step-by-step explanation:
Governmental actions that discourage imports and block the market include tariffs, subsidies, tax incentives, and duties. Free trade zones, on the other hand, promote trade by creating designated areas where goods can be imported or exported without the usual trade barriers. Therefore, the correct answer is B) free trade zones.