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An oppositive does not function like an adverb in a given sentence.
Answer:
Correct answer is North Sea
Explanation:
The correct answer is North Sea because it has the largest deposits of oil in the whole Europe. Most of them are being exploited by Norway. That is why economy of this country has been largely dependent on the production of oil.
The other regions that have been mentioned in here are not as rich with oil as the North Sea is.
