The correct answer is option 4: The President. Prorogation refers to the act of ending a session of the Lok Sabha, which is the lower house of the Indian Parliament. The power to prorogue the Lok Sabha lies with the President of India. Prorogation is a constitutional power exercised by the President, and it marks the formal end of a session. After prorogation, all pending legislative items are halted and need to be reintroduced in the next session. The President acts on the advice of the Prime Minister and the Council of Ministers while exercising this power. The Speaker, option 1, is responsible for conducting the Lok Sabha`s proceedings and maintaining order in the House, but does not have the power to prorogue it.