Introduction:
According to the 2011 census, the state with the lowest female literacy rate is Rajasthan. In this response, we will explore the reasons behind Rajasthan having the lowest female literacy rate among the given options.

Reasons for Rajasthan having the lowest female literacy rate:

1. Socio-cultural factors:
- Rajasthan is a state with deeply rooted patriarchy and conservative social norms. Women's education is often not prioritized, and girls are expected to focus on household chores and marriage rather than pursuing education.
- The prevalent practice of child marriage in Rajasthan contributes to lower female literacy rates. Early marriage disrupts girls' education, as they are forced to drop out of school and assume household responsibilities at a young age.

2. Poverty and economic factors:
- Rajasthan is one of the economically backward states in India, with a significant proportion of the population living in poverty. Poverty often leads to a lack of resources for education, particularly for girls.
- Economic constraints may force families to prioritize education for boys over girls, as they are considered the primary breadwinners. This perpetuates the gender disparity in literacy rates.

3. Infrastructure and accessibility:
- Rajasthan has vast rural areas with limited access to educational institutions. Lack of schools and transportation facilities makes it difficult for girls, especially in rural regions, to access education.
- The distance between schools and villages, combined with safety concerns, restricts parents from sending their daughters to school. This further hampers female literacy rates.

4. Gender disparity and discrimination:
- Gender discrimination and bias against girls in Rajasthan are prevalent in various aspects of society, including education. Families may prioritize the education of male children, believing that investing in girls' education is unnecessary or less valuable.
- Discrimination against girls in schools, such as gender-based violence and biased treatment by teachers, can also discourage families from sending their daughters to school.

Conclusion:
Rajasthan has the lowest female literacy rate among the given options due to socio-cultural factors, poverty, limited infrastructure, and gender discrimination. Addressing these issues requires concerted efforts from the government, civil society organizations, and communities to promote girls' education and gender equality. Implementing policies that ensure access to quality education, raising awareness about the importance of girls' education, and challenging gender biases are crucial steps towards improving the female literacy rate in Rajasthan.