Explanation:

- The statement describes the government's decision to sell a substantial stake and management control of Air India, a state-owned enterprise, to the private sector.

- Correct Answer: Option 2 - Privatisation

- Privatisation involves transferring ownership and management of a public sector enterprise to private entities.

- It helps improve efficiency and reduces the burden on the government.

- Option 1 - Liberalisation

- Involves relaxing government restrictions, often in economic policy, to encourage private sector activity.

- Option 3 - Globalisation

- The process of international integration arising from the interchange of worldviews, products, ideas, and culture.

- Option 4 - Demonetisation

- Refers to the act of stripping a currency unit of its status as legal tender, which is not related to ownership transfer in businesses.