Answer: B. It assumes that poverty alone is the cause of poor school performance.
Step-by-step explanation:
The passage states that poor performance in schools is cased by poverty. This is faulty because it is solely ascribing poor performance to poverty when in fact there could be other factors that are contributing to the poor performance.
The passage therefore oversimplifies the problem and draws a conclusion from a faulty cause assumption as a result. If the writer did not want to do the appropriate research, they could have used simpler wording such as ''poverty contributes to poor school performance'' which would imply that other factors are involved.