Read the passage below carefully and answer the question that follows.
For decades, rural electrification strategies across Sub-Saharan Africa relied almost exclusively on the continuous extension of national high-voltage transmission grids. Proponents argued that centralized infrastructure offered superior economies of scale and uniform tariff structures. However, this capital-intensive model consistently stalled when attempting to reach sparsely populated hinterlands, where low population density and rugged topography rendered trunk line deployment economically unviable. In recent years, decentralized solar microgrids have emerged as a formidable alternative, providing rapid, low-carbon electricity access without requiring extensive grid infrastructure.
Yet, despite their operational agility, microgrids present complex structural trade-offs that complicate their role as a standalone solution. Independent solar installations often suffer from financial fragility, as rural households frequently lack the purchasing power to sustain market-driven tariffs. Furthermore, without state subsidies or unified technical standards, microgrid networks remain vulnerable to equipment failures and fragmented maintenance systems. Consequently, policy experts increasingly contend that sustainable rural electrification requires neither exclusive grid expansion nor isolated microgrid proliferation, but rather a hybrid regulatory framework. Such a paradigm integrates privately operated microgrids into national energy master plans, establishing clear provisions for grid integration when central transmission lines eventually arrive.
Which of the following statements best synthesizes the central argument of the passage?
- Sustainable rural electrification requires a hybrid regulatory model that integrates decentralized solar microgrids into national grid planning rather than relying on either approach in isolation.Answer
- BCentralized high-voltage transmission grids are inherently unsuitable for Sub-Saharan Africa because rugged terrain and low population density make trunk line deployment unviable.
- CPrivately operated solar microgrids should completely replace public energy utilities across rural regions to eliminate tariff inefficiencies and equipment failures.
- DDecentralized solar microgrids have successfully solved rural electrification challenges by providing market-driven tariffs that rural households easily afford.