Critical Reasoning (CR) | Re: Despite advances in geothermal technology and equipment

Conclusion - Area clean of organic sedimentary by glacier will not have oil.
Based on 2 theory.
Theory 1 - Environmental change determines oil presence. Glaciers is the environmental factor here.
Theory 2 - Organic matter determines oil presence. No organic matter present here.

E - Oil can be generated by non-organic matter and brought to surface by cracks. Breaks the linkage of both theories with the conclusion.
C- winning about less data is never right way to argue on GMAT

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