UPSC Prelims 2018— Question 83

**Concept and analysis:** The Partnership for Action on Green Economy was launched at the United Nations Conference on Sustainable Development, Rio+20, held in Rio de Janeiro in 2012. It is a UN-supported mechanism helping countries pursue greener and more inclusive economic transformation. The other listed conferences are important environmental milestones but are not the origin specified for PAGE. The question is testing precise UPSC-level identification rather than a broad association. The key is to distinguish the exact institutional, constitutional, historical, geographical, economic or scientific feature being asked. **Option-wise evaluation** **Option A:** Incorrect. The Earth Summit on Sustainable Development 2002, Johannesburg is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option B:** Correct. The United Nations Conference on Sustainable Development 2012, Rio de Janeiro directly matches the concept or factual identification established in the analysis. **Option C:** Incorrect. The United Nations Framework Convention on Climate Change 2015, Paris is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option D:** Incorrect. The World Sustainable Development Summit 2016, New Delhi is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **UPSC takeaway:** The safest way to solve this type of question is to anchor the answer in the defining feature of the concept and then test every option against that feature. Closely related institutions or terms are often used as distractors. In statement-based questions, do not judge the option as a whole before checking each statement independently. In factual questions, compare the wording of each option with the exact definition, location, institutional role, chronology or scientific property. The correct answer follows from that verification rather than from familiarity with a keyword.