The correct option is C pirs
Pir is a Persian word meaning a spiritual guide. Around 16th century, people from the infertile areas of western Bengal started migrating to the forested and marshy areas of eastern Bengal. This was also a period when Mughals were expanding their territories and had established their capital in Dhaka. People sought stability and assurance in these uncertain times. This stability was provided by the community leaders, teachers and adjudicators. They were referred to as pirs affectionately by the people.