QUESTION TEXT: Over the last few decades, public outcries…
QUESTION TYPE: Must Be True
FACTS:
- There are now stricter environmental regulations, thanks to public outcry.
- Cities that had very polluted air 30 years ago have less air pollution.
- This reduction in air pollution wouldn’t have happened without the regulations.
ANALYSIS: We know that air quality in polluted cities improved. This was thanks to the regulations, and those happened due to public protest.
So public protest allowed the reduction in pollution.
The diagram for this question is sort of strange. The statements are more about cause and effect than conditional rules. I couldn’t make an A ➞ B ➞ C diagram, but nonetheless I’m very confident that we can conclude the correct answer.
My rule is that I don’t diagram if it is a lot of effort to make them. Diagrams are just a tool to solve some questions, they’re not the main goal.
___________
- We only know about the cities that had the worst air pollution 30 years ago. We don’t know anything about the most polluted cities today.
- We only know that this is true for the cities that had bad air pollution 30 years ago. Some less polluted cities may have become more polluted.
- We have no idea who complained about air quality.
- Tempting, but it could be that all cities improved their air quality by a similar amount. Also notice that this answer mentions all pollution, while the stimulus focussed on air pollution.
- CORRECT. Public outcry led to the regulations, and the improvement in air quality wouldn’t have been possible without the regulations.
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