UPSC Prelims 2023— Question 29

This question tests 15th Finance Commission Tax Devolution under Fiscal Federalism. The central point is The 15th Finance Commission used demographic performance, forest/ecology and tax/fiscal effort among the listed criteria. Option A: Only two. This distractor is not the keyed answer because it conflicts with the specific factual relationship, chronology, institutional role, geographic association or conceptual distinction tested in the question. Option B: Only three. This is the keyed answer because it matches the governing fact or concept: The 15th Finance Commission used demographic performance, forest/ecology and tax/fiscal effort among the listed criteria. Option C: Only four. This distractor is not the keyed answer because it conflicts with the specific factual relationship, chronology, institutional role, geographic association or conceptual distinction tested in the question. Option D: All five. This distractor is not the keyed answer because it conflicts with the specific factual relationship, chronology, institutional role, geographic association or conceptual distinction tested in the question. The question should be approached by checking each statement independently rather than accepting a familiar phrase at face value. This is particularly important in UPSC questions where a single incorrect institutional attribution, location, chronology, absolute word or causal link can invalidate an otherwise plausible option. The broader revision takeaway is to connect the keyed answer with the underlying concept rather than memorizing only the letter. The options also illustrate how UPSC constructs distractors by mixing correct facts with one altered detail. In revision, candidates should therefore retain both the positive fact and the nearest contrasting fact so that the same concept can be recognized when the framing changes in another year.