The argument is that "To achieve this result (out of work youth filling roles), the city government should convene employers and educators to determine how best to create paths of upward mobility in these fields." A. is incorrect because it doesn't change the argument at all. C is also unrelated as the argument isn't specific to the top jobs. D affects nothing similar to answer A. E, while this would affect the results wanted (out of work youth filling roles), it has no bearing on the actual argument that the city gov should determine paths of upward mobility. B, on the other hand, that government efforts are ineffective, would mean that "the city government" doing something might not be the best way to achieve the results (out of work youth filling roles). The answer is B.