My difficulty in recognizing E as correct was due to the (in my opinion) unintuitive meaning of "only if" at the end of the answer:

The answer is not saying that the the theory is acceptable. Instead, by using "only if", it is saying that the the only time you will see an acceptable theory of punishment which violates the principle of proportionality, is when the theory is is rehabilitationist in nature.

Essentially E says, if you see the following:

1) principle of proportionality violated

+

2) acceptable theory of punishment

Then you can conclude

3) that the theory is rehabilitationist.

What the answer is not saying, is that there is in fact a theory that matches 1 and 2. It is only saying that if you see 1 and 2, you will necessarily see 3.

Some further dicta...

"Only if" and "if and only if" are phrases that are soooo unintuitive for me that they are basically an automatic red flag for me to slow down read closely any time I see them on the test - that may be helpful for you - it at least was for me.

This question (or at least the answer) calls into play the notion of "existential import" which can be googled if you are overly bored of LSAT torture and want a change of pace.

#feedback

I think the translation for "E" is slightly off on the deep dive - I believe that Legislators should point to having run for office rather than not. It's not super important in context, but I am curious about how it would be diagrammed and possibly use the contra-positive.

I believe that Jo's principle is still violated in answer "E" even if that principle is read only to require the option of working alone.

My reading of"E" gives the workers no option regarding their work environment, stating they have been assigned to work together and "they are to work together at the same workstation".

I have trouble ruling out answer "B" in question 5. My reading of "only a disaster as catastrophic as an earthquake" was that the disruptive event was not necessarily an earthquake, but must have been something on the same level as an earthquake.

I totally, understand the axiom that these only have 1 correct answer, but I'm missing something.