निम्नलिखित में से कौन-सा एक कथन, इस परिच्छेद के केन्द्रीय विचार को सर्वोत्तम रूप से प्रतिबिंबित करता है ?
Read this question in English
Which one of the following statements best reflects the central idea of the passage?
(a) Economies of scale is essential for transition to green growth. · (b) Modern technological progress is intensely linked to path-dependent innovations. · (c) Countries with large economies are in a better position to adopt green technologies. · (d) Timing plays a crucial role in the case of green technology development.
उत्तर और व्याख्या · explanation in English
Answer: (d) हरित प्रौद्योगिकी विकास के मामले में उचित समय-चयन निर्णायक भूमिका निभाता है ।
The passage explains that green technology gets cheaper the more it is used, so moving early and gradually brings its benefits without much disruption, while a late, chaotic transition costs more. The conclusion is about when to act, which is why timing is the central idea.
- ✗ (a) Economies of scale is only one of the reasons costs fall; the passage never calls it 'essential' for the transition. Its conclusion is about moving early, not about scale as a precondition.
- ✗ (b) Too broad. The passage speaks only of green innovation and renewable energy, not of 'modern technological progress' in general.
- ✗ (c) The size of economies is never compared. 'Economies' in the passage are those that move early, not large economies with an advantage.
- ✓ (d) The closing lines — moving early and gradually lets economies 'reap the benefits … without much disruption', and a late transition 'is costlier' — make timing the decisive factor.
Remember · The central idea usually sits in the author's concluding advice; examples such as solar prices only support it.
Question and answer: UPSC's official GS Paper II (2025, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·