Most of the world's supply of uraium currently from mines. It is possible to extract uranium from seawater, but the cost of doing so is greater than the price that uranium fetches in the world market. Therefore, until the cost of extracing uranum from seawater can somehow be reduced, this model of obtaning uraium is unlikely to be commercially viable. which of the following would it be most useful to determine in evaluating the arugment? The answer is A Whether the uraium in deposit on the land is rapidly being depleted. 这个答案我可以理解 but the answer C Whether there are any technological advances that show prmise if reducing the cost of extracing uraium from seawater. 为什麽这个不行阿? --

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