Option 1 states that Raja Rammohun Roy belonged to the gentry class whose power had been diminished because of the imposition of the Permanent Settlement. This statement is false. Raja Rammohun Roy did not belong to the gentry class. He was born into a wealthy Brahmin family and had access to education and resources. The Permanent Settlement, which was introduced by the British, affected the zamindars or landowners, not the gentry class.

Option 2 states that Raja Rammohun Roy studied both Vedantic Monism and Christian Unitarianism. This statement is true. Rammohun Roy was a scholar of various religions and philosophies, and he studied the teachings of Vedantic Monism as well as Christian Unitarianism.

Option 3 states that Raja Rammohun Roy translated the Upanishads into Bengali. This statement is true. Rammohun Roy made significant contributions to the translation and promotion of ancient Hindu scriptures, including the Upanishads, into Bengali.

Option 4 states that Raja Rammohun Roy`s first organization was the Atmiya Sabha, founded in Calcutta in 1815. This statement is true. Rammohun Roy