matthew.mainen and
daniel, you've got some killer discussion going on here! You've really worked to the heart of this tempting wrong answer choice. The lack of "should", the fact that it applies to a limited field, and the possible ambiguity of the word "may" are excellent reasons to eliminate (E)!
I'd like to pull together all of the fantastic thoughts here into one shot for the sake of future readers, and add just a few tweaks of my own. Please let me know if I miss anything!
To tackle this question from the top, I'll expand slightly on some of the great analysis by
qccgraphix above.
When attacking
Principle support questions, we need to start with the core:
Premise: One can find acceptance by choosing assoc. w/ shared beliefs.
If one 1) has this acceptance and 2) can make lifestyle/belief choices, then it's easier to live enjoyable life.
Conclusion: No one should be denied the freedom to choose assoc.
While choosing one's associates doesn't guarantee less difficulty in living an enjoyable life, it certainly opens up the possibility! We need a principle, or rule, that gets us from that idea to the conclusion that no one should then be denied the freedom to do precisely that.
(C) steps up to the plate. The trigger here requires merely that the freedom in question have the possibility of making it less difficult for someone to live an enjoyable life, which our premises fully support. The result is the blanket normative prohibition that no one should be denied the freedom, which matches our conclusion perfectly.
The Unprincipled(A) This blanket prohibition attempts to protect the freedom to make lifestyle choices, which is an altogether different freedom that that protected by the conclusion.
(B) The conclusion protects the freedom to choose, while this rule would dictate to people who they ought to associate with.
(D) This rule would only apply the protection to those people whose enjoyment of life depends on having like-minded friends. The protection in the conclusion would apply to everyone.
(E) There are a few problems with this rule:
1) The grammar used here means that the protection would only apply to those people for whom choosing associates could make it easier to live an enjoyable life. The protection in the conclusion applied to everyone.
2) It is ambiguous whether "may" is used here to denote the mere possibility of choosing or that one is explicitly permitted to choose. Both uses are flawed.
If "may" is meant to express a mere possibility (as in "Joe may go to the party, or he may not"), then this ambiguity is clearly not a match to idea that "no one should be denied the freedom".
However, if "may" is instead intended to convey explicit permission, a different problem appears. "Everyone may choose" might be rewritten as "No one is denied the freedom to choose". However the conclusion was "no one SHOULD be denied the freedom to choose". "May" as explicit permission describes a situation as it is, while "should" describes a situation as it ought to be. Dropping the "should" prevents this principle from matching our conclusion!
Should is a very powerful word on the LSAT! Always take note of it when it appears, and be aware when arguments shift from descriptions of the way things are to the way they ought to be!
Again, bravo to both of you for an excellent discussion on the (de)merits of (E)!