Aishwarya Verma, who topped the UPSC exam with AIR 4 wrote this answer!
He was asked about the Archaeological Survey of India (ASI), its workings, roles and challenges faced by the department.
While explaining the workings of ASI, he wrote, it is involved in the discovery of new archaeological sites, and the maintenance and restoration of these sites.
It also works towards understanding the cultural values of different sites
According to his answers, ASI faces challenges like a lack of skilled staff and the latest technology to help in restoration projects.
In the end, he wrote, ASI has a big role to play in the restoration of Indian heritage and history!