C. the motion of Earth around the center of the Milky Way.
Explanation:
As per the information given by the CBM which explains the background radiation that fills up the space and early stags of the development.
The universe of ration explains the motion of the earth around the centers of the milky way and was accidentally discovered by American radio astronomers n 1964. Its a landmark the shows the origin of the universe when it was young.
To protect its local industries and jobs. Placing trade barriers restricts cheaper goods and service that may out-compete those of the local market if allowed to freely compete in the local market.
To protect its population when it feels that the foreign products or services do not meet its national standards and that the goods/services may be harmful for its local population as a measure of national security.
Trade barrier and tariffs are also used as a form of diplomacy. Trade barriers are imposed on good and services from a country that a nation considers hostile.
