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Option 1 is correct as Alliance Air is a wholly-owned subsidiary of Indian Airlines, meaning Indian Airlines is the singular owner of Alliance Air.
Option 2 is incorrect because the Airports Authority of India manages more than seven international airports, and the total number varies.
Option 3 is wrong because, while the Airports Authority of India does play a role in aviation management, they are not the regulatory organization for enforcing civil air regulations in India. That task lies with the Directorate General of Civil Aviation (DGCA).
Option 4 is incorrect. While the DGCA does handle air safety services and some regulatory aspects, the functions of planning and construction of runways and terminal buildings are typically performed by the Airports Authority of India or other airport-specific entities, not the DGCA.