Read the sentences.Antarctica is a continent that is vastly underused. Filled with resources ranging from fish to minerals to oil, we are overlooking valuable opportunities for our nation’s economy.

The phrase “vastly underused” directly supports the idea that Antarctica is not being utilized enough. The mention of fish, minerals, and oil explains why the author considers its use valuable to the nation’s economy. Choice B focuses on exploration, which the sentences do not specifically discuss.

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