GMAT Verbal Reasoning Practice Test 2

Question : 99 of 101

Marks: +1, -0

The statistics do not differentiate between types of cancer.
Nearby communities have not changed the sources of their drinking water.
Cancer-causing chemicals used at the plant are discharged into a nearby river and find their way into local wells.
The plant both uses and produces chemicals that have been shown to cause cancer.
Some of the pollutants cited by the board as contaminating the local wells have been present in the wells for decades.

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