Sufficient & Necessary Questions - - Question 23

Politician:  Unless our nation redistributes wealth, we will be unable to alleviate economic injustice and our curren...

Kahanding January 11, 2018

I got E

Why B and not E?

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Mehran January 13, 2018

Hi @Kahanding, thanks for your post. This is a Must Be True question, and you can diagram the premises in the stimulus as follows:
P: Unless our nation redistributes wealth, we will be unable to alleviate economic injustice . . .
To diagram an "unless" statement, follow the following rules: (1) unless denotes the necessary condition, and (2) negate the other part of the statement (i.e., the sufficient condition).
AEI ==> RW
P: [If] we are unable to alleviate economic injustice, our current system will lead inevitably to intolerable economic inequities.
not AEI ==> IEI
P: If the inequities become intolerable, those who suffer from the injustice will resort to violence to coerce social reform.
IEI ==> RV

These statements, taken together, establish that a redistribution of wealth is *necessary* for the alleviation of economic injustice. This is answer choice (B).

Answer choice (E) is incorrect because it states that the redistribution of wealth is *sufficient* for the alleviation of economic injustice.