2021 CSAT — Q14

Locate. This is a valid-assumption question — find the unstated premise the argument needs. Test each statement against the passage’s actual things, its stated cause-and-effect, and its level of certainty. The passage’s load-bearing claims: personal cleanliness lowers infection rates but the market created “a false sense of security”; W. Europe shows that “along with personal hygiene, general improvements in environmental conditions… clean water, sanitation and food security” cut death/infection “considerably”; and the hand-hygiene “obsession” brings market influence “overriding or marginalising the negative impact on ecology and the emergence of resistant germs.”

Test (boundary test + negation).

• St4 — scientific/micro-level (personal) interventions not sufficient alone: the W.-Europe line requires environmental improvements alongside personal hygiene. VALID.
• St5 — community/public-health hygiene is what’s really effective: same line + the critique of market hand-hygiene obsession. VALID (fair inference).
• St3 — market entry increases infection risk: the “false sense of security” + “emergence of resistant germs” support this. VALID (fair inference) — this is the line UPSC keys.
• St2 — personal cleanliness prevents resistant germs: the passage says the opposite (obsession brings resistant germs). REVERSED — the direction is backwards → INVALID.
• St1 — obsessed individuals ignore community hygiene: the passage indicts the market, not individuals “ignoring” community hygiene. A claim the passage never makes → INVALID.

Eliminate by anatomy. (a)/(d) seat St1 and St2 — St2 reverses the passage’s direction and St1 is a claim the passage never makes — and are clearly wrong. The genuine contest is among the three valid inferences St3, St4, St5, of which no option offers all three: blind takes the explicit thesis pair (c) 4 and 5; UPSC takes (b) 3 and 4. Key (blind): (c); contested against official (b).

Statement 4 — “along with personal hygiene, general improvements in environmental conditions and components like clean water, sanitation and food security have brought down infant/child death/infection rates considerably”: personal/micro-level cleanliness alone is shown insufficient, needing community-level improvements → VALID. Statement 5 — the same line plus the closing critique that the market hand-hygiene “obsession” marginalises real ecology endorses community/public-health hygiene as what is effective → VALID. Statement 2 is REVERSED — “the obsession with hand hygiene also brings… the emergence of resistant germs,” so personal cleanliness does not prevent resistant germs → INVALID. Statement 1 adds an unstated entity (individuals “ignoring community hygiene”) → INVALID. Contest: blind = (c) 4 and 5 (the passage’s explicit thesis pair); UPSC’s official key is (b) 3 and 4, treating St3 (market entry raises infection risk) as valid in place of St5. St3 and St5 are both defensible inferences, so the (c)-vs-(b) split is genuine; dual-shown, excluded from scoring.

The passage’s argument: personal cleanliness helps but is not enough; real gains came from community- level environmental improvements; and the market’s hand-hygiene obsession is harmful (false security, resistant germs).

• St4 (micro-level insufficient) and St5 (community hygiene effective) are the passage’s explicit two-part thesis. Both valid.
• St3 (market entry raises risk) is also a fair inference from “false sense of security” + resistant germs. Valid — but it pairs with St4 in option (b), not with the thesis-pair.
• St2 reverses the passage (cleanliness does not prevent resistant germs). Invalid.
• St1 imports individuals “ignoring community hygiene,” never stated. Invalid.

Blind answer: (c) 4 and 5 only (the most explicit, least-inferential pair). Official: (b) 3 and 4. Both rest on defensible inferences (St3 vs St5); the key is disputed, so this item is excluded from scoring.

This item is genuinely soft at the option level: three statements (St3, St4, St5) are each defensible inferences, but the four options pair them so that no single option holds all three. St4 is the safest (explicitly stated), and the contest is St5 (the passage’s “community hygiene is effective” thesis, which our blind read takes) versus St3 (the “market entry raises risk” inference, which UPSC keys). Both are inside the text; the passage does not adjudicate which is “more valid.” Because two defensible reads land on two different official-looking options, we dual-show (c) and (b) and exclude the item from scoring rather than retrofit the deduction to UPSC’s letter. The clean takeaways stand regardless: St2 is reversed, St1 is unstated.