A.prohibiting that its water purification methods be disclosed to companies--> incorrect usage: "prohibit that x do y"
B.prohibitingthem from the disclosing of its water purification methods to any company--> "each employee" needs singular pronoun
C.prohibiting disclosure of its water purification methods to any company -->Correct idiom: "prohibit x from doing y"
D.that would prohibitthem from disclosure of its water purification methods to companies
...
B.prohibitingthem from the disclosing of its water purification methods to any company--> "each employee" needs singular pronoun
C.prohibiting disclosure of its water purification methods to any company -->Correct idiom: "prohibit x from doing y"
D.that would prohibitthem from disclosure of its water purification methods to companies
...



.jpg)


