In 1835, which of the following languages was replaced by English as the official language of the East India Company?

The correct option is Persian.

In 1835, the English Education Act was passed by the Council of India, led by Lord William Bentinck (then Governor-General of India) and influenced significantly by Thomas Babington Macaulay's famous "Minute on Indian Education."

Before this reform, the administration of the British East India Company conducted its official business and legal proceedings primarily in Persian, which had been the court language of the Mughal Empire and was retained by the Company for administrative convenience.
With the implementation of the English Education Act of 1835, English officially replaced Persian as the language of administration, higher courts, and government business, establishing English as the medium of instruction for higher education in British India.