The correct answer is B. Gaddi.
The sex ratio of Gaddis is 889 females per 1000 males, which is the lowest among all the Scheduled Tribes in Himachal Pradesh. The sex ratio of other Scheduled Tribes in Himachal Pradesh is as follows:
- Kinaura: 938 females per 1000 males
- Bhot: 944 females per 1000 males
- Beta: 952 females per 1000 males
The low sex ratio of Gaddis is due to a number of factors, including female infanticide, female foeticide, and migration of males. Female infanticide is the practice of killing female infants at birth. Female foeticide is the practice of aborting female fetuses. Migration of males is the practice of males moving away from their home villages in search of work.
Female infanticide and female foeticide are illegal in India. However, they continue to be practiced in some parts of the country, including Himachal Pradesh. The reasons for female infanticide and female foeticide are complex and vary from region to region. However, some of the common reasons include the preference for sons, the fear of dowry, and the belief that daughters are a financial burden.
Migration of males is a common phenomenon in Himachal Pradesh. The main reasons for migration are the lack of employment opportunities in the state and the high cost of living. The migration of males has a number of negative consequences, including the breakdown of families, the loss of traditional skills, and the increase in crime.
The government of Himachal Pradesh has taken a number of measures to improve the sex ratio of Gaddis. These measures include awareness campaigns, the provision of incentives for families with girl children, and the strengthening of the law enforcement machinery. However, more needs to be done to address the issue of the low sex ratio of Gaddis.