It can be inferred from the passage that suppressing all wildfires in the fynbos biome would:

The Fynbos biome of the Cape Floristic Region represents one of the richest biodiversity hotspots on Earth, exhibiting staggering botanical endemism across nutrient-leached sandstone soils. Characterized by sclerophyllous evergreen shrubs belonging predominantly to the Proteaceae, Ericaceae, and Restionaceae families, fynbos vegetation has co-evolved intimately with recurrent wildfire regimes. Wildfires, occurring naturally at intervals of ten to thirty years, clear dense senescent brush and release trapped soil nutrients. Many fynbos species rely on serotiny: the retention of seeds within woody, fire-resistant cones that open only when stimulated by scorching heat. Also, chemical compounds in wildfire smoke, notably karrikins, penetrate soil seed banks and break embryonic dormancy, triggering synchronous post-fire germination during subsequent winter rains.

Answer and explanation

Correct answer: D. Cause brush overgrowth, seed bank deterioration, and biodiversity decline.

  1. Step 1: The passage highlights that fynbos vegetation has intimately co-evolved with natural fire regimes occurring every ten to thirty years, relying on fire heat and smoke for cone dehiscence, nutrient cycling, and seed germination.
  2. Step 2: Without fire, senescent brush continues to accumulate, canopy cones cannot open, soil nutrients remain locked in dead biomass, and seeds lose viability over time, inevitably leading to canopy overgrowth, seed bank deterioration, and severe biodiversity decline.
Answer
Cause brush overgrowth, seed bank deterioration, and biodiversity decline.

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