我觉得这题题干中 we have just learned that Bergeron has fulfilled the financial disclosure requirement for candidacy by submitting a detailed list of his current financial holdings to the election commission.说的很清楚就是Bergeron 已经满足了该要求,所以答案B中submitting a detailed list 是不是the only way to fulfill the requirement 已经没有意义,关键是满足了那些要求之后,他是不是very likely 参选? 对于答案E的回答则正好可以解答此问题。后面不用再说了吧?偶太啰嗦了,板门弄斧。
The question ask what's the relationship between submitting a detailed list of financial boldings and the running for governor, in other words, whether the former is bound to indicate the latter. However, for B, it only say something about whether submitting list is the only form to fulfill the requirement, in my opinion, some other relationship unrelevant to the evaluation.
Since you mentioned required condition and sufficient condition, we start there. Filing is apparently a sufficient condition based on the question. Answer to B will help find out whether it is also a required condition. However, whether it is required is not relevant. Just make up an example:
Tom bought flight ticket from Baffalo to NYC. We think he is going to NYC. However, buying flight ticket is not a required condition. He can buy train ticket or just get a rental car. It is a sufficient condition but adequate to evaluate whether he is going. Whether it is required does not lend any help to this evaluation.