 These 15 members form a council (Parishad) and which elects the Nagar Paalika Adhyaksha (head of the municipal council).
<coherence>  These 15 members form a council (Parishad) and which elects the Nagar Paalika Adhyaksha (head of the municipal council).
 These 15 members form a council (Parishad) that elects the Nagar Paalika Adhyaksha (head of the municipal council).