The correct options are
A Election of a new Sarpanch
B Increasing prevelance of courts and police to settle disputes
C Migration of other communities
With the advent of Panchayati Raj elections in the 1940s and 1950s and the appointment of Sarpanches (who have very similar responsibilities as those of the Panch), the prominence of the role of the Panch has decreased gradually. The emergence of courts and the police for dispute settlement made the role of the Panch insignificant.