Choose the adjective that best describes a trend that cannot be maintained over time:
'Rapid consumption of groundwater reserves at current rates is ecologically ______.'
Answer and explanation
Correct answer: C. unsustainable
- Step 1: 'Unsustainable' describes practices that deplete resources faster than they can replenish, making them impossible to maintain.
- Step 2: Groundwater over-extraction is a classic example of an ecologically unsustainable trend.
Answer
unsustainable.
Why not the others: 'productive' denotes high yield; 'negligible' means insignificant; 'durable' means long-lasting and resilient.
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