<span>The correct answer is C. the OPEC oil embargo. Basically what happened was that the United States supported Israel in a war and the Arab Petroleum Exporting Countries decided to put an embargo on oil trading which meant that there was a shortage of oil in the United States and that what little they could get would be extremely expensive.</span>
Generally speaking, a "mixed" economic system can be characterized by some government involvement and private ownership of most business, since some government regulation ensures the protection of the consumers.