Explanation:

- Option 1: Parliament

- The President of India can be removed by the Parliament through a process called impeachment.

- Impeachment requires a two-thirds majority in both the Lok Sabha and the Rajya Sabha.

- Option 2: Chief Justice of India

- The Chief Justice has no authority to remove the President.

- The judiciary may only have a role if legal disputes arise.

- Option 3: Prime Minister

- The Prime Minister lacks the power to remove the President.

- The Prime Minister is part of the executive, not the parliamentary voting process for impeachment.

- Option 4: Lok Sabha

- The Lok Sabha alone cannot remove the President.

- Both houses of Parliament must participate in the impeachment process.