The correct answer is: a) Thiruvananthapuram.
Thiruvananthapuram International Airport, also known as Trivandrum International Airport, is the international airport serving Thiruvananthapuram, the capital of Kerala, India. It is the third busiest airport in Kerala after Cochin International Airport and Kozhikode International Airport. The airport is located 16 kilometers from the city center.
Kochi International Airport, also known as Cochin International Airport, is an international airport serving Kochi, the second largest city in Kerala, India. It is the busiest airport in Kerala and the fourth busiest airport in India. The airport is located 28 kilometers from the city center.
Kozhikode International Airport, also known as Calicut International Airport, is an international airport serving Kozhikode, the third largest city in Kerala, India. It is the second busiest airport in Kerala after Cochin International Airport. The airport is located 28 kilometers from the city center.
Kannur International Airport, also known as Mattanur International Airport, is an international airport serving Kannur, a city in the northern Indian state of Kerala. It is the fourth busiest airport in Kerala. The airport is located 22 kilometers from the city center.