Prominent business executives often play active roles in United States presidential campaigns as fund raisers or backroom strategists, but few actually seek to become president themselves. Throughout history the great majority of those who have sought to become president have been lawyers, military leaders, or full-time politicians. This is understandable, for the personality and skills that make for success in business do not make for success in politics. Business is largely hierarchical, whereas politics is coordinative. As a result, business executives tend to be uncomfortable with compromises and power-sharing, which are inherent in politics.
Which one of the following, if true, most seriously weaken the proposed explanation of why business executives do not run for president?
(A) Many of the most active presidential fundraisers and backroom strategists are themselves politicians.
(B) Military leaders are generally no more comfortable with compromises and power-sharing than are business executives.
(C) Some of the skills needed to become a successful lawyer are different from some of those needed to become a successful military leader.
(D) Some former presidents have engaged in business ventures after leaving office.
(E) Some hierarchically structured companies have been major financial supporters of candidates for president.
答案是B,但是A为什么不对呢?
背景
Prominent business executives often play active roles in United States presidential campaigns as fund raisers or backroom strategists, but few actually seek to become president themselves
Throughout history the great majority of those who have sought to become president have been lawyers, military leaders, or full-time politicians.
公司高管常常作为总统选举中的fund raisers or backroom strategists，但他们很少自己参加选举，竞选总统的通常是律师等等
解释
1、假设
Business is largely hierarchical, whereas politics is coordinative.
商业是等级森严，而政治是相互合作
As a result, business executives tend to be uncomfortable with compromises and power-sharing, which are inherent in politics
因此，公司高管通常不愿意合作
2、结论
This is understandable, for the personality and skills that make for success in business do not make for success in politics.
反驳结论，反驳解释中的假设就可
A是针对背景内容
The question is on the explanation of the phenomenon not the phenomenon itself.
Hope it helps.
Prominent business executives often play active roles in
This is a weaken kind of problem. You have couple ways to weaken the argument. You can weaken the premise, to show that premise is not valid. You can show that the premise will not lead to the conclusion, etc…
Which one of the following, if true, most seriously weakens the proposed explanation of why business executives do not run for president?
(A) Many of the most active presidential fundraisers and backroom strategists are themselves politicians.
Out of scope. We are talking about business people who are active presidential fundraisers and backroom strategists, it is a smaller scope of people who are active presidential fundraisers and backroom strategists.
(B) Military leaders are generally no more comfortable with compromises and power-sharing than are business executives.
The conclusion of this argument is that few businessmen actually seek to become president themselves because the nature of business and politics is different.
Since businessmen and military is about the same with compromises and power-sharing and military personal can be politician. This answer choice weakens the premise of this argument.
(C) Some of the skills needed to become a successful lawyer are different from some of those needed to become a successful military leader.
Out of scope
(D) Some former presidents have engaged in business ventures after leaving office.
Out of scope
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