Concept:Sex ratio is the number of females per 1,000 males in a population. Among Indian states, Haryana has the lowest sex ratio due to historical socio-cultural factors.Explanation:According to the 2011 Census, India’s overall sex ratio is 940 females per 1,000 males. However, Haryana consistently records the lowest figure among all states, reflecting a significant gender imbalance. Factors such as preference for male children, female foeticide, and skewed birth rates contribute to this. Government initiatives like Beti Bachao, Beti Padhao aim to improve the situation.Answer:Haryana (Option C)