Read the passage below carefully:
In the centuries-old indigo dye pits of Kano, master dyers traditionally relied on ash lye and slaked lime to maintain an alkaline environment suitable for dye reduction. However, recent shifts in local groundwater composition due to expanded borehole drilling across the old city have altered pH buffer dynamics, causing fermentation vats to stall unexpectedly. Rather than resorting to synthetic chemical additives, elder artisans introduced pulverized wild fig leaves (*Ficus thonningii*), which release organic acids that temper excess alkalinity and stabilize the microbial community responsible for dye reduction. Interestingly, while younger apprentices assumed the fig leaves functioned primarily as a direct color enhancer, chemical analysis showed that the leaves contained no indigo precursor compounds whatsoever. Instead, their efficacy depended entirely on regulating the metabolic activity of indigenous *Bacillus* strains in the vat solution. Without this organic intervention, the dye fails to bind permanently to woven cotton fiber, leaving textiles prone to rapid fading upon exposure to sunlight.
Based on the passage above, which of the following can be logically inferred about the role of wild fig leaves in the Kano indigo dyeing process?
- The addition of wild fig leaves indirectly enables color fastness by creating a favorable biological environment for dye-reducing bacteria.Cevap
- BWild fig leaves contribute organic pigment compounds that directly enrich the deep blue hue of the dyed cotton fabric.
- CSynthetic chemical additives are completely incapable of restoring alkalinity levels in stalled traditional indigo vats.
- DIncreased borehole drilling across Kano has permanently destroyed the viability of natural fermentation in indigo production.