Must be TrueDiff: Medium

Logic Breakdown

Passage Summary: In Velyena, most of Moradco's mines have clean records, but globally, every single gold mine Moradco owns has broken environmental rules.

Reasoning: Most Moradco mines in the province of Velyena have never committed environmental violations, yet every Moradco gold mine in the world has committed such violations at some point.

Analysis: This is a Must be True question that relies on the overlap (or lack thereof) between two groups. If 100% of gold mines have violations, but more than 50% of Velyena mines do not have violations, then those clean Velyena mines cannot be gold mines. Therefore, we can safely conclude that most of the mines in Velyena are not gold mines. When the LSAT gives you 'most' of one group and 'all' of another with conflicting characteristics, they are almost always leading you to conclude that the groups are distinct.

Passage Stimulus

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23.

Which one of the following statements follows logically from the statements above?

Correct Answer
D
D follows: since every gold mine has at some time violated, any mine that has never violated cannot be gold. As most of Moradco’s Velyena mines have never violated, it follows that most of those Velyena mines are not gold mines.
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