UPSC Prelims 2015— Question 23

Correct answer: Option C. Nanotechnology can enable targeted drug delivery by designing nanoscale carriers that transport therapeutic agents toward particular tissues or cells. It also has applications in diagnostics, imaging and delivery systems relevant to gene therapy. Therefore both statements describe legitimate applications of nanotechnology in healthcare. Option-wise analysis: Option A: “1 only” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Option B: “2 only” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Option C: “Both 1 and 2” is correct. It directly matches the factual or conceptual requirement tested by the question and is supported by the principle explained above. Option D: “Neither 1 nor 2” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Prelims takeaway: Focus on the precise institutional role, constitutional provision, geographical association, or technical definition being tested. UPSC questions often place a broadly familiar fact beside a narrowly incorrect qualifier; identifying that qualifier is essential for elimination.