Correct Option (A):
Alliance Air was established in 1996 as a regional airline. At the time of the question (2003), it operated as a wholly-owned subsidiary of Indian Airlines, primarily catering to regional and low-density routes.
Incorrect Options:
The Airports Authority of India (AAI) manages a significantly larger number of airports across India, including numerous international airports, not merely seven.
The Airports Authority of India (AAI) is primarily responsible for creating, upgrading, maintaining, and managing civil aviation infrastructure and providing air traffic management services. It is not the regulatory body for enforcing civil air regulations in India; that role is fulfilled by the Directorate General of Civil Aviation (DGCA).
The Directorate General of Civil Aviation (DGCA) is the primary regulatory body in civil aviation, responsible for safety oversight and enforcement of airworthiness standards. The functions of planning and constructing runways and terminal buildings, and providing air navigation services, fall under the purview of the Airports Authority of India (AAI).