OG No.41,42 Questions,TKS

41. Under a provision of the Constitution that was never applied. Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it by the legislatures of two-thirds of the states.
(A) was never applied, Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it
(B) was never applied, there has been a requirement that Congress call a convention for consideration of possible amendments to the document when asked to do it formally
(C) was never applied, whereby Congress is required to call a convention for considering possible amendments to the document when asked to do it formally
(D) has never been applied, whereby Congress is required to call a convention to consider possible amendments to the document when formally asked to do so
(E) has never been applied. Congress is required to call a convention to consider possible amendments to the document when formally asked to do so
Choices A, B, C, and D contain tense errors (the use of was never applied with has been required in A, for example), unidiomatic expressions (call... for considering), and uses of a pronoun (it) with no noun referent. By introducing the subordinating conjunction whereby, C and D produce sentence fragments. Only E, the best choice, corrects all of these problems. The predicate has never been applied refers to a span of time, from the writing of the Constitution to the present, rather than to a past event (as was does), and the phrase is required indicates that the provision still applies. The phrase call... to consider is idiomatic, and to do so can substitute grammatically for it.
Whereby 是个从属连词 / 动作目的用不定式。

请问一下，BEST CHOICE E中，Congress 前面的"."，我认为不合适，应该是","
想问一下大家，SC中有没有出现过因标点符号错误而可以否定一个选项的？
谢谢~

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42. The current administration, being worried over some foreign trade barriers being removed and our exports failing to increase as a result of deep cuts in the value of the dollar, has formed a group to study ways to sharpen our competitiveness.
(A) being worried over some foreign trade barriers being removed and our exports failing
(B) worrying over some foreign trade barriers being removed, also over the failure of our exports
(C) worried about the removal of some foreign trade barriers and the failure of our exports
(D) in that they were worried about the removal of some foreign trade barriers and also about the failure of our exports
(E) because of its worry concerning the removal of some foreign trade barriers, also concerning the failure of our exports
Choice C is best because its phrasing is parallel and concise. A, D, and E begin with unnecessarily wordy phrases. Choice C also uses the idiomatic expression worried about rather than worried over (as in A) or worrying over (as in B); worried about is preferable when describing a condition rather than an action. Whereas C uses compact and parallel noun phrases such as the removal... and the failure ... , the other choices employ phrases that are wordy, awkward, or nonparallel. D is also flawed in that the plural pronoun they does not agree with the singular noun administration.

选C 的话，不是有两个谓语啦？而且没有AND？

谢谢您的回复和帮助。

关于42还是不太明白，worried 怎么做为插入部分？过去分词么？不可能吧，过去分词就变成 be worried by ...