Correct Answer : Option (D) - Indira Gandhi International Airport
The Indira Gandhi International (IGI) airport, New Delhi was declared as the best airport in the category of over "40 million passengers per annum (MPPA)" in Asia Pacific by Airports Council International (ACI) in the Airport Service Quality (ASQ) Programme for 2018.It had maintained the position of World no. 2 from 2011 to 2013 and in 2014 went up to become the World no. 1 in the 25-40 MMPA category and stayed at that position in 2015.It stood World No. 2 in the highest category of more than 40 MPPA in 2016 and in 2017, it was adjudged as the best airport in the highest category of over 40 MPPA.