[quote="gmat1393"]A weapons-smuggling incident recently took place in country Y. We all know that Y is a closed society. So Y's government must have known about the weapons.

Which of the following is an assumption that would make the conclusion above logically correct?


(A) If a government knows about a particular weapons-smuggling incident, it must have intended to use the weapons for its own purposes.

(B) If a government claims that it knew nothing about a particular weapons-smuggling incident, it must have known everything about it.

(C) If a government does not permit weapons to enter a country, it is a closed society.

(D) If a country is a closed society, its government has a large contingent of armed guards patrolling its borders.

(E) If a country is a closed society, its government has knowledge about everything that occurs in the country.



E should be correct answer
D can be tempting , but D goes too far in talking about large contigent of armed guards

E.

Falsify the sentence E. And see if the conclusion ''So Y's government must have known about the weapons. '' still holds true. In this case, it doesn not. So, In order for the conclusion to hold true, E must also be true. (and since E is not explicitly mentioned in the paragraph, it must be an assumption)

E is correct.

I understand D can be tempting, but D goes too far in talking about out of the scope

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