Final answer:
The word import is best defined as obtaining a product from another country. Governments use trade policies such as tariffs to control imports, which can influence national security and economic stability.
Step-by-step explanation:
The best definition for the word import is B. To obtain a product from another country. When countries engage in trade, they import goods and services that are either unavailable domestically or are available at a lower cost from foreign markets. Governments can affect imports by setting trade policies, such as tariffs, which are taxes on imported goods making them more expensive and thus potentially reducing their consumption within the country.
Trade barriers like tariffs and quotas are used to protect domestic industries from foreign competition and can be used to control the balance of trade. On the other hand, excessive reliance on imports, especially for critical goods like oil, can raise concerns about national security and economic stability, which is why some governments seek to restrict imports to protect national interests.