关于prohibit的用法

In an attempt to guarantee the security of its innovative water purification method, the company required each employee to sign a confidentiality agreement prohibiting that its water purification methods be disclosed to companies using an analogous purification process.

1. prohibiting that its water purification methods be disclosed to companies

2. prohibiting them from the disclosing of its water purification methods to any company

3. prohibiting disclosure of its water purification methods to any company

4. that would prohibit them from disclosure of its water purification methods to companies

5. that would prohibit its water purification methods to be disclosed to a company

为什麽D不对， prohibit sb from doing sth是比较固定的用法；如果说这里THEM指代前面的EACH EMPLOYEE有单复数问题，那C中句末的any company 也应该用 any companies 才对呀？

请不吝指教！

答案是C

那答案是哪个比较好呢???

考点：

1、prohibit用法：

正确表达：1)prohibit sth；2）prohibit sb. from doing sth.;

干扰选项：1）prohibit that; 2) prohibit sb. to do sth.;

2、法律法规后分词结构优于从句；

Hence, 本题D中的为that从句及disclosure(至少要用disclosing)

这下清楚了，C既是PROHIBIT STH，ANY COMPANY也用了单数，又不存在指代问题，应该是最好的答案了，谢谢两位！

嗯，很有才