The Parliament of India consists of three main parts: the Lok Sabha, the Rajya Sabha, and the office of the President of India.

Option 1 is correct as it includes all three components. The Lok Sabha, also known as the House of the People, is the lower house of the Parliament. It represents the people of India and consists of members who are directly elected by the public.

The Rajya Sabha, also known as the Council of States, is the upper house of the Parliament. It represents the states and union territories of India and consists of members who are elected by the members of the State Legislative Assemblies.

The office of the President of India is an integral part of the Parliament. The President is the head of the state and is elected by an electoral college comprising of the elected members of both the Lok Sabha and the Rajya Sabha, in addition to members of State Legislative Assemblies.

Option 2 is incorrect as it does not include the office of the President of India.

Option 3 is incorrect as it does not include the office of the President of India.

Option 4 is incorrect as it includes additional components - the office of the Prime Minister of India which is not a part of the Parliament. Alert - correct answer should be 2.