The correct answer is (d). The President of India is elected by an electoral college consisting of elected members of the Rajya Sabha, Lok Sabha and Legislative Assemblies of the States. The total number of electors is 4,896, which includes 776 members of the Rajya Sabha, 543 members of the Lok Sabha and 4,033 members of the Legislative Assemblies of the States. The President is elected by a system of proportional representation by means of single transferable vote. The candidate who secures a majority of the votes polled is elected as the President.
Option (a) is incorrect because the Rajya Sabha members only constitute one-third of the electoral college. Option (b) is incorrect because the Lok Sabha members only constitute one-half of the electoral college. Option (c) is incorrect because the Members of the State Assemblies and Lok Sabha only constitute two-thirds of the electoral college.