Correct option is D
The 79th Amendment Act, 1999, extended the period of reservation for Scheduled Castes (SCs) and Scheduled Tribes (STs) in the Lok Sabha and State Legislative Assemblies for another ten years, up to the year 2010.
This amendment aimed to ensure political representation for SCs and STs by reserving seats for them in both Parliament and State Assemblies.
This reservation was originally provided under Article 334 of the Indian Constitution, and the amendment extended this provision as part of India's commitment to affirmative action for these marginalized communities.
