बॅरिस्टर जयकर हे पहिल्या गोलमेज परिषदेला ________ म्हणून गेले.

The correct answer is Option A (Hindu Liberal).

Key Points:
• First Round Table Conference (November 1930 – January 1931): Convened in London by British Prime Minister Ramsay MacDonald to discuss constitutional reforms for India (boycotted by the Indian National Congress).
• Barrister M.R. Jayakar (Mukund Ramrao Jayakar, 1873–1959): Prominent legal scholar, educational founder (First Vice-Chancellor of University of Poona), and leader of the National Liberal Federation / Hindu Mahasabha moderate wing.
• Representation as Hindu Liberal: Barrister Jayakar attended the First Round Table Conference representing the Hindu Liberal / Liberal Group viewpoint along with Sir Tej Bahadur Sapru, striving to mediate between nationalist demands and constitutional federalism.
• Mediation: Jayakar and Sapru played a vital role in negotiating the subsequent Gandhi-Irwin Pact (1931).
• Designation: Attended as a Hindu Liberal.
• Key Takeaway: Barrister M.R. Jayakar attended the First Round Table Conference (1930) in London as a Hindu Liberal delegate.