Option 1 -> Starts with Bombay Deccan settlement (1820s), which actually occurred last, not first.
Option 2 -> Places Bombay Deccan settlement first and Regulating Act last, both incorrect positions.
Option 3 -> Correctly starts with Diwani (1765) but places Bombay settlement before Regulating Act (1773).
Option 4 -> Diwani of Bengal (1765) → Regulating Act (1773) → Permanent Settlement (1793) → Bombay Deccan settlement (1820s) - chronologically accurate.
Hence, Option 4: (B), (D), (C), (A) -> The East India Company acquired Diwani rights in 1765, followed by the Regulating Act in 1773 to control the Company's activities, then the Permanent Settlement in Bengal in 1793 under Lord Cornwallis, and finally the first revenue settlement in Bombay Deccan in the 1820s-1830s -> correct