Every Labrador retriever in my neighborhood is a well-behaved dog.
Evidence
Every Lab in my neighborhood X → Y is a well-behaved dog.
Being well behaved requires Y → Z that it was trained.
Conclusion
It is training that accounts for Z causes Y, well-behaved, not Lab breed not X*
Evaluate
Because there are Conditionals / Quantifiers like "Every" and "No", it makes sense to think about diagramming this argument somewhat algebraically.
Also, there are overlapping ideas (well-behaved is in all three claims / training is in two / Labrador is in two), which also argues in favor of an algebraic approach.
Given our strong structural recipe, we might be able to find the correct answer just by matching up those parts. But sometimes we need to think more about why we're objecting to this logic.
How could we argue with the Conclusion?
We know that training is relevant to being well-behaved, since it's identified as a necessary characteristic. But couldn't the DNA of a Labrador also play a role? Maybe the author's conclusion is just messed up because she's saying, "THIS is the cause, not THAT", when we might object, "couldn't they both be causal factors?"
Goal
Look for an answer with this structure: P1: Every X is Y P2: Y requires Z Conc: Y is due to Z, not to X
Or look for an answer whose conclusion is vulnerable to the same type of conversational objection, "couldn't both of them be involved"?