Passage Summary: All the Labs in this area are good dogs. Since dogs have to be trained to be good, the owner thinks it's the training, not the breed, that makes them behave.

Conclusion: The good behavior of local Labrador retrievers is caused by their training rather than their genetic makeup.

Reasoning: Every Labrador in the neighborhood is well-behaved, and training is a necessary requirement for any pet to be well-behaved.

Analysis: The argument identifies a necessary condition for a result and then incorrectly concludes that this condition is the sole cause of that result. It ignores the possibility that both factors—training and genetics—could be contributing to the behavior simultaneously. When looking for a parallel, seek out a choice that takes a requirement for a certain outcome and treats it as the exclusive explanation, while dismissing an alternative influence. It's like saying you need a key to start a car, so the key is the only reason the car moves, ignoring the engine entirely.