Explanation:

- The process of economic reforms in India, often referred to as Liberalisation, Privatisation, and Globalisation (LPG), was introduced in the year 1991.

- This major shift happened during the Eighth Five-Year Plan (1992–1997).

- The Eighth Plan focused on opening up the Indian economy, encouraging private investment, and reducing government control.

- The Tenth Plan (2002–2007) and Sixth Plan (1980–1985) came before or after the reforms.

- The Fifth Plan (1974–1979) mainly targeted poverty eradication and self-reliance, not economic reforms.

Correct answer:

Option:3, Eighth