AAA26集思广益中参加讨论提高自己惠及他人

承影

There is no evidence to prove that the decreasing of pollution in B was caused by the purchase of X.

There is only time sequence.

likui

Not the pollution but the severe weather is the most crucial variable that puts impact on people's decision whether to live there.

天之角

false analogy, no evidence is shown to support the assumption that the country C and country B are analogous in all the aspects.