The correct option is State Election Commissioner.
Explanation
The Constitution of India provides for an independent constitutional authority at the state level to conduct elections to local self-government institutions, including Panchayati Raj Institutions.
Constitutional Provision:
- State Election Commission: Article 243K of the Constitution vests the superintendence, direction, and control of the preparation of electoral rolls and the conduct of elections to Panchayati Raj Institutions in the State Election Commission.
- Election Commission of India: Its jurisdiction is confined to elections to Parliament, State Legislatures, and the offices of the President and Vice-President.
- District Collector and Chief Minister: These authorities may assist administratively but do not possess constitutional authority to conduct Panchayat elections.
Key Takeaway: Elections to Panchayati Raj Institutions are constitutionally conducted and supervised by the State Election Commission under Article 243K.