The Brahmo Samaj was a reform movement founded by Raja Ram Mohan Roy in 1828. It aimed to promote monotheism, social reform, and the abolition of social evils prevalent in Indian society. The correct statement among the options is option 1, which states that the Brahmo Samaj did not consider Vedic scriptures as infallible.

Option 1: It considered Vedic scriptures as infallible - This statement is not true. The Brahmo Samaj, under the leadership of Raja Ram Mohan Roy and later Debendranath Tagore, did not consider the Vedic scriptures as infallible. They believed in the use of reason and rationality and questioned many traditional Hindu beliefs, including blind adherence to the Vedas.

Option 2: It opposed idolatry - This statement is true. The Brahmo Samaj was critical of idolatry and stressed the worship of one formless and all-pervading God.

Option 3: It emphasized the worship of one God - This statement is true. The Brahmo Samaj emphasized the worship of a single God and rejected the polytheistic beliefs of Hinduism.

Option 4: It emphasized the worship of God without the mediation of priests - This statement is