According to the passage, squatter cities are environment-friendly for all of the following reasons EXCEPT:
Explanation:
This question requires a basic understanding of what will be the environment efficient option, now 3 and 4 can be eliminated because obviously being energy efficient and recycling will help the environment tremendously. Now between sorting garbage and keep streets clean, sorting garbage will have a better impact on the environment and is also mentioned in the passage. Hence, the correct answer is option 2.
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