Sentence Correction (SC) | Re: Both the oil experts advice that inventory of heating oil

This is not a well-written question. The full sentence should be "Both the oil expert’s advice that inventory of heating oil should be marked up to meet an impending severe winter as well as the speculation that a major unit might close for a long timebecause of a major accident, caused heating oil pricesto surge to record levels last week in the world oil markets."

Note that "due to" is a noun modifier and cannot be used to modify "a major unit might close."
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