Correct Idiom: "Require X to do Y" so Discard D and E
In B "them" is wrong
In A either you can use "Prohibit X from Y" or "Prohibit X". "Prohibit That" is always wrong
Se left out with C.
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
gmat prep
Source: Beat The GMAT — Sentence Correction |
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.
A. prohibiting that its water purification methods be disclosed to companies
B. prohibiting them from the disclosing of its water purification methods to any company
C. prohibiting disclosure of its water purification methods to any company
D. that would prohibit them from disclosure of its water purification methods to companies
E. that would prohibit its water purification methods to be disclosed to a company
The issues:
1. The following idioms are correct:
==> "Prohibit X from doing Y".
==> Prohibit X, where X is a NOUN.
2. The following usages are incorrect:
==> Prohibit that X be Y.
==> Prohibit X to be Y.
Now, come to the sentence.
On the basis of the idioms, we can eliminate the options A and E. The pronoun "they" does not have a clear reference in the B and D.
Answer is C.
A. prohibiting that its water purification methods be disclosed to companies
B. prohibiting them from the disclosing of its water purification methods to any company
C. prohibiting disclosure of its water purification methods to any company
D. that would prohibit them from disclosure of its water purification methods to companies
E. that would prohibit its water purification methods to be disclosed to a company
The issues:
1. The following idioms are correct:
==> "Prohibit X from doing Y".
==> Prohibit X, where X is a NOUN.
2. The following usages are incorrect:
==> Prohibit that X be Y.
==> Prohibit X to be Y.
Now, come to the sentence.
On the basis of the idioms, we can eliminate the options A and E. The pronoun "they" does not have a clear reference in the B and D.
Answer is C.












