Select the transitional phrase that highlights contrasting paradigms:
Traditional fossil-fuel combustion releases substantial greenhouse gases into the atmosphere; _____, geothermal power plants harness subterranean thermal gradients with minimal carbon emissions.
Answer and explanation
Correct answer: C. by contrast
- Step 1: Identify the two contrasting concepts: carbon-heavy fossil combustion versus low-emission geothermal harnessing.
- Step 2: Select 'by contrast' to highlight the clear operational and environmental differences between the two energy paradigms.
Answer
by contrast.
Why not the others: 'consequently' and 'therefore' suggest that geothermal generation is an effect caused by fossil emissions; 'as a matter of fact' reinforces a statement rather than illustrating a polarity.
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