The right answer is 4) None of the above, since statements 1, 2 and 3 are true. Arab members of the Organization of Petroleum Exporting Countries (OPEC) imposed an embargo against the United States (and other countries, such as the Netherlands and Portugal) as a retaliatory measure for its decision to help Israel during the Arab-Israel War. As a way to preserve energy and develop national energy sources, several measures were implemented, such as a national 55-mile-per-hour speed limit on U.S. highways.
