Explanation:

3rd option is correct.
Namdharis is an Indian religious group. They consider themselves a sect of Sikhism, but insist that the line of Sikh Gurus did not end with Guru Gobind Singh, but continued through the Namdhari leaders.
The Namdhari movement was founded by Balak Singh (1797–1862), who did not believe in any religious ritual other than the repetition of God’s name (or nam, for which reason members of the sect are called Namdharis). His successor, Ram Singh (1816–), introduced the sect’s distinctive style of wearing the turban (bound straight across the forehead rather than at an angle), of dressing only in clothing made from white handwoven cloth, and of frenzied chanting of hymns culminating in shrieks (kuks; hence the name Kuka). Under Ram Singh’s leadership, the Namdharis sought a resurgence of Sikh rule in the Punjab.