The correct option is B All the above
Proportional representation is a concept in voting systems used to elect an assembly or council. India’s Upper House election (Rajya Sabha) is actually based on Proportional Representation System. In Separate Electorate System, the community to which the electorate belongs would choose their own leaders via an election in which the candidates of only their community would be allowed to contest and only their community members would vote. In Reservation of Seats, the candidates in the election can belong only to a particular community for which it is reserved.