Belur Math was founded by which of the following social reformers in British India?

The correct option is Swami Vivekanand.

Detailed Explanation:
Belur Math, situated on the west bank of the Hooghly River in Belur, West Bengal, is the prestigious headquarters of the Ramakrishna Math and Ramakrishna Mission. It was founded by Swami Vivekananda, the chief disciple of the 19th-century mystic Sri Ramakrishna Paramahansa.

Key historical details:
• Swami Vivekananda established the Ramakrishna Mission on May 1, 1897, to propagate the teachings of his guru and to run philanthropic and educational programs.
�� To establish a permanent home for the monastic order, Vivekananda acquired land at Belur and formally consecrated the Belur Math in 1899.
• The architecture of Belur Math is world-renowned for incorporating motifs from Hinduism, Islam, Christianity, and Buddhism, symbolizing the universal unity of all religions championed by Swami Vivekananda.

Analysis of other options:
• K. T. Telang: Kashinath Trimbak Telang was an eminent Indologist, reformist, and judge of the Bombay High Court who played a key role in the Indian National Congress.
• V. N. Mandlik: Vishwanath Narayan Mandlik was a prominent lawyer and social reformer from Maharashtra, noted for his work on Hindu law.
• R. G. Bhandarkar: Ramakrishna Gopal Bhandarkar was a pioneering Sanskrit scholar, Indologist, and social reformer who co-founded the Prarthana Samaj in Maharashtra.