By which year had India completely started using EVMs in elections ? 

Correct option is C

India completely adopted Electronic Voting Machines (EVMs) in all elections by the year 2004. The transition from paper ballots to EVMs was a gradual process that took place over several years, starting with pilot projects in the 1980s and full implementation by the 2004 Lok Sabha elections.

Timeline of EVM Implementation in India:

• 1982 – EVMs were used for the first time in a limited manner in the Parur Assembly constituency (Kerala) by-election. However, due to legal issues, their use was discontinued.
• 1992 – The Representation of the People Act, 1951 was amended to legally permit the use of EVMs in elections.
• 1998 – EVMs were used on a larger scale in the Assembly elections in Madhya Pradesh, Rajasthan, and Delhi.
• 2001 – EVMs were used in all Assembly elections across states like Tamil Nadu, Kerala, Puducherry, and West Bengal.
• 2004 – For the first time, EVMs were used in all 543 Lok Sabha constituencies, making it the first fully electronic general election in India.