Solution:
Both statements (A) and (R) are true and (R) is the correct explanation of the assertion (A).In a multiparty system, there are multiple parties that contest for office and compete for power. Because of its geographical and social diversity, India has evolved a multiparty system. India is a vast country with diverse groups and communities that do not get easily absorbed into a two-party system. Regional diversity and issues have led to the rise of regional parties. A multiparty system deepens democracy at all levels. It provides people with different choices and also encourages people's participation in politics and decision-making.