Answer:
i believe the answer to the question is: Learning a second language can benefit many Americans and help them compete in the global marketplace.
Explanation:
first of all, most of the other claims are not even for a argumentative essay. the 1st one, " more and more student have begun to study chinese because that nation is a global leader" is simply someone saying that it is happening. for the 3rd one, "the United States traded with a number of Asian nations, including China, Japan, and South Korea." is simply what is happening. what makes the 3rd one a argumentative essay? nothing! as for the 4th one, this one would be great for a personal essay, but other than that it can not be used for this situation. so out of elimination, the the 3rd one is correct.