The correct answer is (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv). Explanation & Key Takeaways: The constitution of India as enacted on 26th January 1950 was a document whose certain features were borrowed from other constitutions with modifications to avoid their fallacies at the same time. Some of the features borrowed from the different constitutions of the world. • British constitution: Parliamentary government, Rule of Law, legislative procedure, single citizenship, cabinet system, prerogative writs, parliamentary privileges, and bicameralism. • US Constitution: Fundamental rights, independence of the judiciary, judicial review, impeachment of the president, removal of Supreme Court and high court judges, and post of vice-president. • Irish Constitution: Directive Principles of State Policy, the nomination of members to Rajya Sabha, and method of election of the president. • Canadian Constitution: Federation with a strong Centre, vesting of residuary powers in the Centre, the appointment of state governors by the Centre, and advisory jurisdiction of the Supreme Court. • Australian constitution: Concurrent List, freedom of trade, commerce and intercourse, and a joint sitting of the two Houses of Parliament. • Weimar Constitution: Suspension of Fundamental Rights during Emergency. • Soviet Constitution: Fundamental duties and the ideal of justice (social, economic, and political) in the Preamble. • French Constitution: Republic and the ideals of liberty, equality, and fraternity in the Preamble. • Japanese Constitution: Procedure established by Law. • South African Constitution: Procedure for amendment of the Constitution and election of members of Rajya Sabha.