PT31, S3, Q18 - It is impossible to

[dina]

I broke this stem down as: Science -> Measurement -> Selecting units, and since Selecting units -> Arbitrary, Science -> Arbitrary.

I can see how A has the same reasoning, but why is D wrong?
Doesn't it state Manager -> Evaluating People -> Subjective,
and since Subjective -> Resentment, Manager -> Resentment?

Thanks!!

[ManhattanPrepLSAT1]

This one is tough. I think answer choice (D) is rather close. If you're employing notation like you did above, it's always a good idea to start by working to get your terms to line up, but if you end up with more than one answer choice, you might need to tighten down on the language to help get rid of one.

In this case, you're allowing a key term to be represented the same way in your notation when the terms themselves are slightly different. There is a difference between resenting the process and resenting the one undertaking the process. For this reason we cannot establish the validity of the conclusion in answer choice (D), whereas we can for answer choice (A).

This is really typical on match the reasoning/flaw questions. Structure will only take you so far. If you've tested the structure, don't forget to check the validity of the conclusion. If the argument above is valid, so too should the answer choice, and vice-a-versa.

Does that answer your question here?