The correct answer is (a) Haryana.
Haryana recorded the lowest sex-ratio of 879 females per 1000 males in the 2011 census. This means that for every 1000 males in Haryana, there were only 879 females. This is significantly lower than the national average of 940 females per 1000 males.
There are a number of factors that contribute to the low sex-ratio in Haryana. One factor is the practice of female foeticide, which is the selective abortion of female fetuses. This is often done due to a preference for sons, who are seen as being more valuable than daughters. Another factor is the high rate of female infant mortality, which is the death of a girl child before her first birthday. This is often due to neglect or malnutrition.
The low sex-ratio in Haryana has a number of negative consequences. It can lead to a shortage of women in the workforce, which can impact the economy. It can also lead to social problems, such as an increase in crime and violence.
The government of Haryana has taken a number of measures to address the issue of the low sex-ratio. These measures include awareness campaigns, stricter laws against female foeticide, and programs to improve the health and well-being of girls and women.
Despite these measures, the problem of the low sex-ratio in Haryana remains a serious one. It is important to continue to raise awareness of the issue and to take steps to address it.