None of the above. Answer E on a multiple choice test. When assigning fault for the high cost of a gallon of gasoline for my car I do not even consider any of the above. Why should I? I live in the United States of America where there is a huge cache of oil right off the coast of CA, LA, TX, and AK. Not to mention a little tiny place called the Nat'l Petroleum Wilderness or something to that effect. Oil shortage... I do not think so.
Whenever a conservative asks a lib why we do not drill here and now the lib will always answer with some BS about how we need alternative energy sources. Blah, blah, blah. That is their credo or religion whichever you choose. I call it full of shit. They want us to be like small children. Libs hate when we are on top and kicking ass. They hate when we are the best country on Earth. They like us to be down in the dirt like all of the third world countries.
How about this year instead of hitting the big 5-0-0 we actually start drilling in our country. Maybe we would create a few jobs in the process.
Libs stop whining and thank yourself. You voted for high gas prices.