Which of the following vested the secretary of state for India with supreme control over the Government of India

The Government of India Act, 1858, also known as the 'Act for the Better Government of India', transferred the power to govern India from the East India Company to the British Crown following the Revolt of 1857. This Act created the office of the Secretary of State for India, who was a member of the British Cabinet and was vested with the powers previously exercised by the Court of Directors and the Board of Control. Specifically, the Act deposited all powers of the Company's nominal government into the Secretary of State alone, granting him supreme control over the Government of India. He was assisted by a 15-member Council of India but remained directly answerable to the British Parliament. While Pitt's India Act of 1784 established the Board of Control, it was the 1858 Act that centralized supreme authority in the Secretary of State.

Sources

1. [1] Rajiv Ahir. A Brief History of Modern India (2019 ed.). SPECTRUM. > Chapter 26: Constitutional, Administrative and Judicial Developments > Central Government > p. 525
2. [2] https://en.wikipedia.org/wiki/Pitt%27s_India_Act