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

I understand from your query that you've eliminated all other answers, and eliminated E as well. And wonder why is E correct.
So with this understanding of your query, let me try explain:

Argument says:
They (experts ) agree that inareas that were scraped clean of organic sedimentary deposits by glaciers ...,the biological “ingredients” that theybelieve are necessary
...

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