The correct answer is B. Satnamis.
The Satnamis are a Bhakti sect founded by Birbhan in the 16th century. Their religious granth, the Adi Granth, is revered like the Granth of the Sikhs.
The Satnamis believe in one God, who is formless and without attributes. They believe that all people are equal in the eyes of God, and that there is no need for priests or temples. They practice a simple form of worship, which includes singing hymns, meditating, and reading the Adi Granth.
The Satnamis are a peaceful and egalitarian sect. They have a strong tradition of social service, and they are active in promoting education and health care.
The other options are incorrect.
A. Pothi is a general term for a book or manuscript. It is not the name of any specific religious text.
C. Vaishanavism is a Hindu sect that worships Vishnu as the supreme deity. It is not a Bhakti sect.
D. Shaivism is a Hindu sect that worships Shiva as the supreme deity. It is not a Bhakti sect.