Passage Summary: Using both hand signs and talking is the best way to teach a dog because a study showed those dogs listen twice as well.

Conclusion: Combining vocal commands with hand gestures is the most effective way to train dogs.

Reasoning: A study demonstrated that dogs trained with both methods obeyed significantly more often than those trained with only one.

Analysis: The statement in question is the very first sentence, which acts as the main point the author wants us to believe. The second sentence starts with 'After all,' which is a classic indicator that evidence is following to support the preceding claim. Therefore, the statement is the main conclusion, and the rest of the passage exists to provide empirical support for it. Identifying the conclusion is often about finding the 'what' that the 'why' is pointing toward.