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Difficulty: Very hardSummary: Paraphrasing, Synthesis, and Conciseness

Read the passage below carefully:

The rapid expansion of cassava processing clusters across Southwest Nigeria has significantly boosted local employment, yet it presents a severe environmental challenge through the untreated discharge of high-cyanide wastewater into nearby aquatic ecosystems. While conventional effluent treatment facilities remain cost-prohibitive for smallholder processing cooperatives, recent indigenous biotechnological interventions involving micro-algal bioremediation have offered a dual-benefit pathway. By utilizing specific strains of native micro-algae to neutralize cyanogenic compounds, these cooperatives not only purify toxic effluents to regulatory standards but also harvest the resulting algal biomass as protein-rich livestock feed. Consequently, this eco-innovative synthesis resolves the historical tension between agro-industrial growth and ecological preservation without imposing ruinous capital expenditure on small-scale enterprises.

Which of the following options provides the most accurate and concise summary of the central thesis of the passage?

  1. Native micro-algal bioremediation enables smallholder cassava processors to economically neutralize toxic wastewater while generating valuable livestock feed.Answer
  2. B
    Smallholder cassava processing cooperatives in Southwest Nigeria are facing financial ruin due to the high capital cost of installing conventional wastewater treatment infrastructure.
  3. C
    Micro-algal bioremediation will soon render cassava cultivation the most lucrative and environmentally sustainable agricultural sector across West Africa.
  4. D
    Indigenous processing clusters discharge untreated cyanogenic wastewater because regulatory bodies prohibit the harvest of algal biomass for animal feed.

Answer

Native micro-algal bioremediation enables smallholder cassava processors to economically neutralize toxic wastewater while generating valuable livestock feed.
The correct response encapsulates the primary thesis: micro-algal bioremediation offers a low-cost, dual-benefit solution that purifies toxic cassava effluent to environmental standards while generating livestock feed.

Step-by-Step Solution

1
Identify the primary thesis and problem-solution dynamic in the passage.
The core problem is high-cyanide cassava wastewater and prohibitive conventional treatment costs; the solution is native micro-algal bioremediation which cleans water affordably and yields animal feed.
A comprehensive summary must synthesize the problem, the core solution, and its key advantages while excluding minor details.
2
Evaluate each candidate option for conciseness, accuracy, and core thesis coverage.
The correct synthesis integrates both the environmental purification benefit and the economical secondary byproduct (livestock feed).
Distractors tend to focus exclusively on background constraints or make unverified future claims.

Key Concept

Summary Paraphrasing and Synthesis
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Topics

Summary: Paraphrasing, Synthesis, and Conciseness

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