一道很奇葩的逻辑题

chiliwen100

请教各位大神，这是狒狒逻辑TEST 1 第8题：

8. The stable functioning of a societydepends upon the relatively long-term stability of the goals of its citizens.This is clear from the fact that unless the majority of individuals have apredictable and enduring set of aspirations, it will be impossible for alegislature to craft laws that will augment the satisfaction of the citizenry,and it should be obvious that a society is stable only if its laws tend toincrease the happiness of its citizens.

The claim that a society is stable only ifits laws tend to increase the happiness of its citizens plays which one of thefollowing roles in the argument?

(A) It is the conclusion of the argument.

(B) It helps to support the conclusion of theargument.

(C) It is a claim that must be refuted if theconclusion is to be established.

(D) It is a consequence of the argument.

(E) It is used to illustrate the generalprinciple that the argument presupposes.

解释如下：

这是一个典型的必要题型，题目之所以觉得有难度，

因为conclusion 在首而论证过程在后，而且还有概念的等价交换：to increase thehappiness of its citizens　＝＝to augment the satisfaction of the citizenry

Conclusion: The stable functioning of a society depends upon therelatively long-term stability of the goals of its citizens.

it should be obvious that a society is stable only if its laws tend toincrease the happiness of its citizens.

A society is stable (a) à its laws tend toincrease the happiness of its citizens. (b)

This is clear from the fact that unless the majority of individualshave a predictable and enduring set of aspirations, it will be impossible for alegislature to craft laws that will augment the satisfaction of the citizenry,

To craft laws that will augment the satisfaction of the citizenry (b)à the majority of individualshave a predictable and enduring set of aspirations, (c)

Therefore, A requires C. (the conclusion)

看懂文章后，不难得到正确答案B.

为什么不选E啊？把中间那个条件看作是结论的presuppose不行吗？