In order to discourage the importation of manufactured goods, a country should adopt

If a country wants to discourage the importation of manufactured goods, it should adopt an import substitution strategy. This is a policy where a country seeks to replace imported goods with locally produced goods in order to reduce dependency on foreign goods and to promote domestic industries. This can be done by implementing policies that provide incentives for the development of local industries, such as tax breaks or subsidies, and by imposing restrictions or tariffs on imported goods. By doing so, the cost of imported goods becomes higher, making them less attractive and less competitive compared to the locally produced goods. Therefore, the correct option is "import substitution strategy".