Q24 - If a society encourages freedom

by **ManhattanPrepLSAT1** Thu Aug 12, 2010 7:45 pm

The stimulus gives us an argument that commits a reversal.

EFT ---> CF
CF
========
EFT

The question stem asks us to find the one answer choice that does not also commit a reversal.

(A) commits a reversal (Key: S = safe, R = airfares rise)
S ---> R
R
======
S

(B) commits a reversal (Key: IE = improved efficiency, CD = crime down)
IE ---> CD
CD
=======
IE

(C) commits a reversal (Key: IPW = interested in preserving wildlife, H = hunting)
IPW ---> ~H
~H
========
IPW

(D) commits a reversal (Key: S = safe, P = poison)
S ---> ~P
~P
======
S

(E) is a valid argument. It's a contrapositive! (Key: D = democratic, ME = meaningful effect)
D ---> ME
~ME
=======
~D