The correct option is C Idol worship
Swami Dayanand Saraswati founded the Arya Samaj that brought about changes in the religious perception of Indians. He was against idolatry and man-made instructions that women are not allowed to read the Vedas. He also transformed the education system by introducing Anglo-Vedic schools to offer Indian students an updated curriculum teaching both the knowledge of the Vedas along with contemporary English education.