LSAT Practice Test

Which one of the following, if true, does most to justify the conclusion above?

1. If an influential figure disputes the conclusion

2. If the conclusion aligns with current societal norms

3. If a long-term study supports the conclusion

4. If a prediction based on the conclusion comes true

The correct answer is: If a prediction based on the conclusion comes true

The argument is focused on justifying the conclusion presented. In this case, the most effective way to do so is by demonstrating that a prediction based on the conclusion actually comes true. This would support the idea that the conclusion is valid and reliable. Therefore, option D is the correct answer as it directly strengthens the argument by showing the real-world application and success of the conclusion.