The department responsible for the implementation of social welfare schemes in Karnataka:

Department of Social Welfare
Department of Women and Child Development
Department of Rural Development
All of the above

The correct answer is: D) All of the above.

The Department of Social Welfare, the Department of Women and Child Development, and the Department of Rural Development are all responsible for the implementation of social welfare schemes in Karnataka.

The Department of Social Welfare is responsible for the implementation of schemes for the welfare of the weaker sections of society, such as the SCs, STs, OBCs, minorities, and the disabled. It also provides financial assistance to the poor and needy, and runs hostels and schools for the underprivileged.

The Department of Women and Child Development is responsible for the welfare of women and children. It runs schemes for the education, health, and nutrition of women and children, and provides protection to women from violence.

The Department of Rural Development is responsible for the development of rural areas. It runs schemes for the construction of roads, bridges, and other infrastructure in rural areas, and provides financial assistance to farmers and other rural people.

These departments work together to ensure that the benefits of social welfare schemes reach the people who need them the most.