12th OG SC 101马上考试了~~求解。谢谢大家

叶子cherish

选项c的解析The reference for the pronoun it is unclear because mang nouns have intervened between the appearance of logical referent(course of action) and it.是什么意思？在course of action与it之间没有单数名词啊。it如何指待不清？还是说只要中间有名词不管单数复数，it都可以指代从而引起指代不清？