After the energy crisis of the 1970s and the opec oil embargo, the us changed its ideas about foreign oil dependency. which of the following statements best represents the change that took place at this time? a) the us increased its dependency on foreign oil. b) the us decreased its dependency on foreign oil and the economic vulnerability it brings. c) the us began using only renewable energy sources. d) the us began building new nuclear power plants to replace fossil fuel use. e) the us did not make any changes to its foreign oil policies.