Three major developments in Indian politics during the 1990s include:
1. Economic Liberalization (1991): India initiated economic reforms under the leadership of P.V. Narasimha Rao, including trade liberalization, privatization, and opening up the economy to foreign investment, which transformed India into one of the world’s fastest-growing economies.
2. Rise of Coalition Politics: The era saw the emergence of coalition governments at the center, with the dominance of regional parties, ending the era of single-party rule by Congress and bringing greater representation to regional interests.
3. The Babri Masjid Demolition (1992): The demolition of the Babri Masjid by Hindu activists sparked widespread communal violence and had a long-lasting impact on Indian politics, particularly in terms of Hindu-Muslim relations.
Thus, the correct answer is (a).