Since empathy is essential for people to be willing to follow moral codes that sometimes require them to ignore their own welfare to help others, civilized society could not exist without empathy.
Conclusion
Civilized society could not exist without empathy. ~Empathy → ~Civilized society
Evidence (since)
Moral codes sometimes require people to ignore their own welfare to help others, and empathy is required to follow those moral codes.
~Empathy → ~Follow moral codes that say sometimes ignore own welfare
Evaluate
If a conclusion is making this logic path ~Empathy -------------------> ~CS
And our evidence has provided us this much ~E -----> ~FMC
Then the argument is assuming this missing link: ~FMC -------------> ~CS
What does that diagram mean? It's saying .
We would have also conceived of this whole thing in requirement language.
The conclusion is saying "civilized society requires empathy", but the evidence never mentions civilized society at all (so we know the correct answer will).
The evidence says that "following these moral codes requires empathy", so that would tell us that the author is assuming that "civilized society requires following these moral codes".
Goal
Look for an answer that sounds like,
or that sounds like