I thinkadi_800 wrote:This reply is taken from Bob's notes..
Pronouns do not necessarily refer to the nearest eligible noun. If that were true, there would be no such thing as ambiguous pronoun reference. The real reason that "it" is not ambiguous in choice A is that the participle "enabling" refers to the Supreme Court, and so the object "it" of the participle refers to the object of the Supreme Court's award, the CIA.
enabling is referring to powers not to supreme court
ing without comma always modifies noun / noun phase just before it.