Which concern would an advocate of offshore oil drilling most likely raise about opec? a. opec controls too much of the world's oil supply, so to reduce economic risk, america needs domestic oil sources. b. opec includes treaties that could suddenly draw the united states into a foreign war, increasing the need for oil. c. opec makes it easy for companies to ship jobs overseas, which hurts the american oil industry. d. opec makes it easy for american companies to build overseas oil rigs that exploit workers to produce low-priced energy.