The correct answer is (b).
The Vice-President of India is elected by the members of an electoral college comprising all the members of both Houses of Parliament. The electoral college consists of elected members of both Houses of Parliament, i.e., Lok Sabha and Rajya Sabha. The Vice-President is elected by a system of proportional representation by means of single transferable vote. The voting is done by secret ballot. The candidate who secures a majority of the votes polled is elected as the Vice-President.
Option (a) is incorrect because it only includes elected members of both Houses of Parliament. The electoral college also includes nominated members of Rajya Sabha.
Option (c) is incorrect because it only includes elected members of Rajya Sabha and State Assemblies. The electoral college does not include nominated members of Rajya Sabha or State Assemblies.
Option (d) is incorrect because it only includes elected members of State Assemblies. The electoral college does not include nominated members of State Assemblies.