Who among the following was a proponent of Fabianism as a movement?

1. The question asks who among the following was a proponent of Fabianism as a movement. 2. Fabianism is a socialist movement originating in Britain in the late 19th century, advocating gradual societal reform rather than revolution. 3. Annie Besant, while primarily known as a Theosophist and Home Rule League leader in India, was influenced by and associated with Fabian socialist ideas during her time in Britain before fully dedicating herself to Theosophy. She was a member of the Fabian Society. 4. A. O. Hume was instrumental in founding the Indian National Congress. Michael Madhusudan Dutt was a 19th-century Bengali poet and playwright. R. Palme Dutt was a prominent British Communist journalist and theorist.