Correct answer: (b) 2, 3 and 4
Explanation
- A
1, 2 and 3
1, 2 and 3 would include ‘India is a disaster free country’ with the two other true-looking limbs and drop mangroves. This paper does not key that trio. Statement 1 is also dropped from the official set.
- B
2, 3 and 4
(b) Official key: The paper keys 2, 3 and 4 as true: Bhopal was man-made; India is treated here as disaster-free in the English stem; mangroves reduce cyclone impact. Statement 1 (maximum damage in developing countries) is left out of the official combination.
- C
1, 2 and 4
1, 2 and 4 is the combination many textbooks would tick (developing-country damage, Bhopal, mangroves) while rejecting ‘disaster free’. It is not the stored key. Do not replace 2-3-4 with 1-2-4.
- D
1, 3 and 4
1, 3 and 4 drops the Bhopal man-made statement. Bhopal is keyed true in this set, so this trio fails the official code.
Summary. Official key is (b). True statements on this row are 2, 3 and 4. Bhopal gas tragedy is man-made; mangroves blunt cyclones; statement 3 is included as keyed true. Statement 1 is not in the official bundle. Keep 2, 3 and 4.