medium · GMAT Verbal
An argument states: 'The city's new recycling program has diverted 30% more waste from landfills than the previous program. Clearly, the new program is more cost-effective.'
Which of the following is a necessary assumption of the argument?
- The new program's cost has not risen by 30% or more relative to the old program's cost.
- The new program costs strictly less in absolute terms than the previous program did.
- Landfill space is becoming increasingly expensive to purchase and maintain.
- Every single city resident is now participating in the new recycling program.
- The new program diverts more waste than any comparable program in the entire region.
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