Through which of the following organisations did Annie Besant promote the studies of ancient Indian religions, philosophies and doctrines?

Correct option is B

The correct answer is (b) Theosophical Society.
 Annie Besant: A prominent British social reformer and supporter of Indian self-rule.
 Theosophical Society: Through this organization, Annie Besant promoted the studies of ancient Indian religions, philosophies, and doctrines.
 Founded: The Theosophical Society was founded in 1875 in New York City by Helena Petrovna Blavatsky, Henry Steel Olcott, and others.
 Activities: The society focused on exploring spiritual and philosophical traditions from around the world, with a particular emphasis on Hinduism, Buddhism, and other Eastern religions.
 Headquarters: The society’s headquarters were eventually established in Adyar, Chennai, India, which became a center for the promotion of Indian spiritual and philosophical traditions.
Other options:
 Arya Samaj: A Hindu reform movement founded by Swami Dayananda Saraswati in 1875.
 Paramhans Mandali: A secret socio-religious group in Maharashtra, India, formed in 1849 to promote monotheism and social reforms.
 Prarthana Samaj: A movement for religious and social reform in Maharashtra, established in 1867 by Dr. Atmaram Pandurang and others.