Read the passage below carefully:
The commercial processing of cashew nuts across West Africa produces massive quantities of cashew nut shell liquid (CNSL), an industrial byproduct long discarded as agricultural waste. Recent chemical engineering innovations have enabled researchers to refine raw CNSL into green bio-solvents that effectively replace hazardous petroleum-based solvents in industrial paints and resins. Unlike synthetic alternatives, these plant-derived solvents emit negligible volatile organic compounds, drastically lowering environmental toxicity during manufacturing. Furthermore, localized processing of CNSL provides rural cashew-farming communities with a vital second revenue stream, mitigating financial instability caused by fluctuating global raw-cashew prices. While initial refining infrastructure requires moderate capital investment, the long-term economic and ecological benefits render bio-solvent extraction a pivotal advancement for sustainable industrialization in the sub-region.
Based on the passage above, match each statement to its structural role within the author's overall argument.
- Refining cashew nut shell liquid into green bio-solvents represents a pivotal advancement for sustainable West African industrialization.Central Thesis (Main Idea)
- Plant-derived solvents emit minimal volatile organic compounds, drastically reducing environmental toxicity during manufacturing.Primary Supporting Detail (Environmental Benefit)
- Local processing of CNSL provides rural farming communities with an additional revenue stream to cushion global price fluctuations.Primary Supporting Detail (Socioeconomic Benefit)
- Establishing refining infrastructure for bio-solvent extraction requires moderate upfront capital investment.Subsidiary Concession / Counter-Detail