Which of the following is/are the principal featureis) of the Government of India Act, 1919? 1. Introduction of dyarchy in the executive government of the provinces 2. Introduction of separate communal electorates for Muslims 3. Devolution of legislative authority by the centre to the provinces Select the correct answer using the codes given below:

1. The Government of India Act, 1919, also known as the Montagu-Chelmsford Reforms, introduced significant changes to the governance structure of British India. 2. Statement 1 is correct. A key feature of the Act of 1919 was the introduction of dyarchy (dual government) in the executive government of the provinces. Provincial subjects were divided into 'Transferred' (administered by the governor with the aid of ministers responsible to the legislative council) and 'Reserved' (administered by the governor and his executive council without responsibility to the legislature). 3. Statement 2 is incorrect. Separate communal electorates for Muslims were introduced earlier by the Indian Councils Act, 1909 (Morley-Minto Reforms). The 1919 Act *extended* the principle of communal electorates to other communities like Sikhs, Indian Christians, Anglo-Indians, and Europeans, but it did not introduce it for Muslims. 4. Statement 3 is correct. The Act demarcated central and provincial subjects for the first time, separating their respective legislative spheres. The provincial legislatures were authorized to make laws on the provincial list of subjects. This represented a significant step in the devolution of legislative authority from the centre to the provinces. 5. Therefore, the principal features included in the options are the introduction of dyarchy in the provinces and the devolution of legislative authority.