Prep-166

166. Nine months after the county banned jet skis and other water bikes from the tranquil waters of Puget Sound, a judge overturned the ban on the ground of violating state laws for allowing the use of personal watercraft on common waterways.

A. of violating state laws for allowing

B. of their violating state laws to allow

C. that it violates state laws that allowed

D. that it violated state laws allowing

E. that state laws were being violated allowing

A: 此处应该用同位语从句

B: 同上

C: violates应该用过去式；that allowed用allowing更简洁

D: correct

E: 被动语态没必要，逻辑意思表达也错

注意：

1、同位语从句和定语从句、介词结构的逻辑意思上的区别

2、用在法律等的修饰上，分词结构比定语从句更能表达出状态的含义，以往GWD表达法律的修饰一般都用分词结构

此题不明白，哪位nn解释一下哈

on the ground(s) that…: if you do sth on the grounds of a particular thing, that thing is the reason for your action.
                

The court overturned that decision on the grounds that the Prosecution has withheld crucial evidence.

on the ground(s) of +noun.

Owen was against it, on the grounds of expense.

it指代ban，allowing是现在分词作定语修饰laws，这样MM就明白了吧？

请问D中的it是指的什么啊