Solution:Rig Veda reflects a naturalistic polytheism—a belief in many God who personified natural phenomenon. The Rig Veda reflects the belief and practices of a religions aristocracy and its patrons and there are several striking similarities with ideas reflected in the Iranian Avesta.
The sacrifices were of two kinds. The first kind of sacrifices were those in which certain hymns and verses of Rig Veda were used as benedictions and prayers at birth, marriage and other occasions of daily life. These simple sacrifices were performed by everyone.
The second kind of ceremonial worship was so elaborate that seven classes of priest were required. Hence, statements 1, 2 and 4 correctly describes the nature of religion according to the Rig Veda.