求问一题目，看了很多解释还是没懂

1998JIN · 发表于 2019-9-29 17:10:10

For a local government to outlaw all strikes by its workers is a costly mistake, because all its labor disputes must then be settled by binding arbitration, without any negotiated public-sector labor settlements guiding the arbitrators. Strikes should be outlawed only for categories of public-sector workers for whose services no acceptable substitute exists.
The statements above best support which of the following conclusions?
(A) Where public-service workers are permitted to strike, contract negotiations with those workers are typically settled without a strike.
(B) Where strikes by all categories of pubic-sector workers are outlawed, no acceptable substitutes for the services provided by any of those workers are available.
(C) Binding arbitration tends to be more advantageous for public-service workers where it is the only available means of settling labor disputes with such workers.
(D) Most categories of public-sector workers have no counterparts in the private sector.
(E) A strike by workers in a local government is unlikely to be settled without help from an arbitrator.

求问，题目中的橙色句子没明白是什么意思....
C 更有利是哪看出来的？
D为啥不对，说了不可替代，要是有counterpart不就可以替代了吗？

求问一题目，看了很多解释还是没懂

所属分类: GMAT考试

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