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Option 1 states that Kerala has the highest sex ratio and Haryana has the lowest sex ratio, as per the census. A sex ratio is calculated by dividing the number of females by the number of males in a given population. Kerala is known to have a high sex ratio, indicating a higher number of females compared to males. On the other hand, Haryana has a low sex ratio, which means there are fewer females compared to males in the state. Himachal Pradesh and Punjab are mentioned in option 2 but there is no information given about their sex ratios. Similarly, option 3 mentions Meghalaya and Bihar without providing any information about their sex ratios. Option 4 mentions Tamil Nadu and Uttar Pradesh, again without giving any details about their respective sex ratios. Hence, option 1 is the correct answer.