Logical reasoning PrepTest 101 · Section 2 · Question 20

Therefore - As long as different cultures exist, no morals are shared

First, it’s based on anthropological studies. While we normally defer to experts on the LSAT unless we’re given a reason to doubt them, that changes in Bizarro questions. Since four answers will weaken this, we should anticipate an answer that brings up information leading us to believe that the anthropologists may be wrong in this case.

Second, there’s a comparison here - it talks about different cultures/different moral codes. Does that comparison carry into the conclusion? That conclusion is about different cultures, but it isn’t about different moral codes. Rather, it’s about individual values being shared. Values and morals are close enough that there’s no gap there, but there is a difference between a moral code and the individual morals/values that make it up. In jumping from that whole (the code) to a part (the values), this argument commits a Whole to Part flaw. Any answer that suggests that while codes may be different, some individual values are shared will weaken this argument.

Finally, the conclusion is qualified - it applies only “as long as” distinct cultures exist. If distinct cultures don’t exist, then the conclusion doesn’t apply. This doesn’t lead us to an anticipated weaken answer, but rather an anticipated answer that doesn’t weaken the argument. Anything that talks about the condition attached to the conclusion not applying will not weaken this argument. Normally, that would make it a trap answer, but here in this Bizarro question, that means it would be correct.