Q13. Which one of the following statements best reflects the most logical and rational inference that can be drawn from the passage?
Detailed Solution
The passage details numerous ways elephants significantly impact and shape their ecosystem: creating clearings, preventing overgrowth, aiding seed dispersal, enriching soil with dung, and providing water sources during droughts. These actions demonstrate that elephants play a critical and disproportionately large role in maintaining the structure and health of their environment, which is the definition of a keystone species.
Their activities directly benefit the overall biodiversity of the ecosystem. Option A is not directly inferred. Option C is an extreme statement ('cannot be maintained') not fully supported.
Option D misrepresents their ecological role as being 'as per their requirement' rather than a natural, often involuntary, process.
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