The correct answer is option 3, which is "Parliament." The President of India can only be removed from office through the process of impeachment. Impeachment is a process initiated by the Parliament, which consists of two houses - the Lok Sabha and the Rajya Sabha. A proposal for the impeachment of the President can be made by either house of Parliament. If the proposal is approved by at least two-thirds of the total membership of the house and by a majority of not less than two-thirds of the members present and voting, it is then sent to the other house. The procedure is repeated in the other house as well. If both houses of Parliament pass the impeachment proposal, the President is removed from office. It is important to note that the Prime Minister, Chief Justice of India, and Lok Sabha alone do not have the power to remove the President.