The correct answer is: a) Rural local governance.
Panchayat Raj is a system of rural local governance in India. It is a three-tier system, with village panchayats at the lowest level, block panchayats at the intermediate level, and district panchayats at the highest level. The panchayats are elected bodies, and they are responsible for a wide range of local government functions, including agriculture, education, health, and sanitation.
Option b) is incorrect because Panchayat Raj is not a system of urban local governance. Urban local governance is carried out by municipalities, which are elected bodies responsible for the administration of cities and towns.
Option c) is incorrect because Panchayat Raj is not a system of tribal self-governance. Tribal self-governance is carried out by tribal councils, which are elected bodies responsible for the administration of tribal areas.
Option d) is incorrect because Panchayat Raj is not a system of state-level administration. State-level administration is carried out by the state government, which is headed by the chief minister.