In the context of Indian history, the principle of 'Dyarchy (diarchy)' refers to
- ADivision of the central legislature into two houses.
- BIntroduction of double government i.e., Central and State governments.
- CHaving two sets of rulers; one in London and another in Delhi.
- DDivision of the subjects delegated to the provinces into two categories.Correct
Explanation
In the context of Indian history, the principle of 'Dyarchy' (or diarchy) refers to a system of double government introduced in the provinces by the Government of India Act of 1919 (Montagu-Chelmsford Reforms). Under this system, the subjects delegated to the provinces were divided into two categories: 'reserved' subjects (e.g., finance, police, land revenue) which were administered by the Governor and his executive council without being responsible to the provincial legislature, and 'transferred' subjects (e.g., education, local self-government, public health) which were administered by the Governor with the aid of ministers responsible to the provincial legislative council. This marked an initial step towards responsible government in the provinces.

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