Correct Answer:
C. 1784
The Pitts India Act was introduced in the year 1784 by the British Parliament. This act aimed to rectify the shortcomings of the Regulating Act of 1773 and to establish greater parliamentary control over the British East India Company's administration in India. It created a Board of Control to supervise the Company's civil, military, and revenue affairs. The other years, 1757 (Battle of Plassey), 1777, and 1799, are not associated with the introduction of this specific legislative act.