QUESTION TYPE: Must be True
- Regulations followed ➞ Less sulfur dioxide
- There is more sulfur dioxide than before
ANALYSIS: It sounds like the interior ministry’s regulations for coal plants have not been followed. That’s what we can conclude from the contrapositive of the first statement above: Less sulfur dioxide ➞ Regulations followed
- We don’t know what will happen in the future. We only know what should have happened in the past if the regulations had been followed.
- CORRECT. See the analysis above. If there’s not less sulfur dioxide, then there must have been violations.
- We don’t know. Maybe stronger regulations would force compliance.
- We only know coal plants are a source of sulfur dioxide pollution. It’s possible that other pollutants are more common and come from other sources.
- This isn’t true. If the penalties for violations were increased, maybe the regulations would start working.
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