Recent developments in Indian politics

Read the passage and answer the questions below:
Party politics in India has confronted numerous challenges. Not only
has the Congress system destroyed itself, but the fragmentation of the
Congress coalition has triggered a new emphasis on self-representation
which raises questions about the party system and its capacity to
accommodate diverse interests, …. . An important test facing the polity is
to evolve a party system or political parties that can effectively articulate
and aggregate a variety of interests. — Zoya Hasan
(a) Write a short note on what the author calls challenges of the
party system in the light of what you have read in this chapter.
(b) Given an example from this chapter of the lack of accommodation
and aggregation mentioned in this passage.
(c) Why is it necessary for parties to accommodate and aggregate
variety of interests?