This paired question tests two independent historical relationships and requires both to be correct in the stated order. The Cabinet Mission Plan proposed a three-tier federal structure: individual provinces at the base groups of provinces with similar characteristics at the middle level and an All India Union at the top handling only defense foreign affairs and communications. The Muslim League initially accepted this plan which would have kept India united but later withdrew acceptance. The wording of “The famous 'Cabinet Mission Plan' of 1946 proposed which structure for India?” makes Three-tier federal structure (Provinces Groups and Union) decisive because the stem combines a particular date, place and political consequence rather than asking for For statement two, the supported answer is 1915. Mahatma Gandhi returned to India from South Africa on 9 January 1915 arriving at Bombay. He had spent 21 years in South Africa (1893-1914). On his return Gokhale advised him to spend a year traveling across India to understand it before engaging in politics. Gandhi founded his Sabarmati Ashram in Ahmedabad in 1917. The wording of “Mahatma Gandhi returned from South Africa to India in which year?” makes 1915 decisive because the stem combines a particular date, place and political consequence rather than asking for a loose association. This development forms part of the changing Therefore the correct ordered pair is Three-tier federal structure (Provinces Groups and Union) followed by 1915. An option containing only one correct component must be rejected because the stem asks for a complete two-part match. This format strengthens chronology, role discrimination and careful option comparison rather than rewarding recognition of a single familiar name.