Solution:Warren Hastings was the Governor General of Bengal during 1774-85 AD. He himself was a prolific scholar and a staunch supporter of oriental learning. It was with his study of Sanskrit, Persian and Arabic.It was his encouragement and support that the Asiatic Society of Bengal was established in 1784 AD, however, he rejected the proposal for the chairmanship of this institution in favour of Sir William Jones.
Charles Wilkins, Nathaniel Halhead, Jonathan Duncan etc. contributed to the study of oriental studies under the patronage and support of Warren Hastings. Warren Hastings wrote the preface to the English translation of 'Bhagavad Gita' done by Charles Wilkins.
According to the question, two things are mentioned in the statement—(1) the establishment of the Asiatic Society and (2) Warren Hastings not accepting its presidency in favour of William Jones. For the same reason, it is described that he himself was a scholar and encouraged the study of oriental studies.
The encouragement for the study of oriental science here confirms the reason for both the statements. Thus it is clear that both the statement in question and the reason are correct and reason is the correct explanation of the statement. The Commission has given answer (b) to this question, which is not correct. The correct answer should be (a).