Concept:The airport naming decision is based on a mutual agreement between the Punjab and Haryana governments.Explanation:Both state governments agreed to name the Chandigarh International Airport in Mohali after a revolutionary freedom fighter.Among the given options, the revolutionary whose name was jointly selected is Shaheed Bhagat Singh.Therefore, the airport is known as Shaheed Bhagat Singh International Airport.Answer:D. Shaheed Bhagat Singh