GMAT Critical Reasoning (CR) | Re: Of all the times for the U.S. to be discouraging domestic

A, C & D are rejected & the discussion is on B & D

The statementsays
Libya's descent into chaos is fueling a rapid rise in oil prices, and unrest in other oil-producing countries

There could be other reasons linked with Libiya's descent into chaos & rising fuel prices
such as
probably Libiya has some thing to do with refining of the oil (not producing oil)
probably something to do with transportation of oil (not producing oil)
or may be some treaty signed between oil producing
...

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