The correct options are
A Raja Rammohan Roy preached monotheism.
C Raja Rammohan Roy published tracts condemning
social evils.
D Raja Rammohan Roy was supported by Governor General William Bentinck.
Raja Rammohan Roy observed a misinterpretation of the teachings of Hinduism around him. This led to him preaching monotheism, meaning praying to one god. He also preached against idol-worship, as it was not mentioned in the Vedas.
Rammohan Roy was deeply concerned with the prevailing customs of sati, child marriage, and polygamy. To tackle these problems, he published tracts and petitioned the government to legislate against them. His campaign was successful, as the Governor-General William Bentinck abolished the practice of Sati in 1829.