Correct answer: (d) Haryana
Explanation
- A
Madhya Pradesh
(a) Madhya Pradesh. MP is neither the richest of this set nor the worst on sex ratio. It is not the key.
- B
Maharashtra
(b) Maharashtra. Maharashtra ranks high economically but has a better sex ratio than Haryana. It is not the stored pair.
- C
West Bengal
(c) West Bengal. West Bengal is not the economic top of this list and its sex ratio is not the lowest.
- D
Haryana
(d) Haryana. Among these four, Haryana combines high per-capita income with the lowest child and overall sex ratios (Census 2011: 879 women per 1,000 men). That stored contrast is the official key.
Summary. Official key is (d) Haryana. The paper wants the state that is economically high yet lowest on sex ratio: Haryana. Maharashtra is rich but not the worst ratio; MP and West Bengal fail the double test. Neighbouring Census 2011 figures are Kerala at the other end. Honour Haryana.