The correct answer is (b). The President of India is not a constituent part of Parliament. The President is the head of state of India and the Commander-in-Chief of the Indian Armed Forces. The President is elected by an electoral college consisting of members of both Houses of Parliament and the legislative assemblies of the states. The President has the power to appoint the Prime Minister and other members of the Council of Ministers, to dissolve Parliament, to veto legislation, and to declare war. The President also has the power to grant pardons and reprieves.
The President is not a constituent part of Parliament because the President is not a member of either House of Parliament. The President does not have the right to vote in Parliament or to participate in the discussions. The President does, however, have the power to address Parliament at a joint meeting every year.
The President can promulgate ordinances in certain situations. An ordinance is a law that is made by the President without the approval of Parliament. The President can only promulgate an ordinance when Parliament is not in session and when there is an urgent need for a law.