The correct answer is A) Bengaluru.
Bengaluru International Airport, also known as Kempegowda International Airport, is the primary international airport serving the Indian state of Karnataka. It is located in Devanahalli, about 40 kilometres (25 mi) from the city centre of Bengaluru. The airport is named after Kempegowda, the founder of Bengaluru.
The airport is the third busiest airport in India, after Indira Gandhi International Airport in Delhi and Chhatrapati Shivaji Maharaj International Airport in Mumbai. It is also the busiest airport in the country in terms of international passenger traffic.
The airport has two terminals, Terminal 1 and Terminal 2. Terminal 1 is used for domestic flights, while Terminal 2 is used for international flights. The airport also has a cargo terminal and a maintenance, repair and overhaul (MRO) facility.
The airport is served by a number of airlines, including Air India, IndiGo, Jet Airways, SpiceJet, and Qatar Airways. The airport also has a number of cargo airlines, including Air India Cargo, Emirates SkyCargo, and Lufthansa Cargo.
The airport is connected to the city of Bengaluru by a number of roads, including the Outer Ring Road, the National Highway 44, and the Bangalore-Mysore Road. The airport is also connected to the city by a number of public transport options, including the Metro, the bus, and the taxi.
The airport is a major economic hub for the state of Karnataka. The airport provides employment to a large number of people and also generates a significant amount of revenue for the state. The airport is also a major tourist attraction, with a number of hotels and restaurants located in the vicinity of the airport.
The other options are incorrect because they are not major international airports serving Karnataka.