India’s first reading lounge was constructed at:

Correct option is D

The correct answer is (d) Lal Bahadur Shastri International Airport, Varanasi.
Explanation: • The Lal Bahadur Shastri International Airport in Varanasi became the first airport in India to have a free dedicated reading lounge. • The lounge was established with the assistance of the National Book Trust (NBT), an autonomous body under the Ministry of Education. • It is located near the entrance of the airport's main lobby. 
Information Booster: • The reading lounge features a variety of books in several languages, including books on Kashi (Varanasi), literature in international languages, and books by young authors published under the Prime Minister Yuva Yojana. • The initiative was aimed at promoting the habit of reading and providing a relaxing space for passengers. • A QR code is also available for passengers to download parts of books or access audiobooks. 
Additional Knowledge: (a) Gopinath Bordoloi International Airport: While a prominent airport in Guwahati, Assam, it was not the location of India's first reading lounge. (b) New Delhi International Airport: New Delhi's airport is one of the busiest in India but did not have the first airport reading lounge. (c) Bangalore International Airport: Bangalore is a major hub, but the first airport reading lounge was established in Varanasi, not Bangalore.