In this question, we are looking for the city whose longitude is closest to that of Delhi. Longitude is the east-west position of a point on the Earth`s surface. Every city has specific coordinates of latitude and longitude which locates it on the globe. The longitude of Delhi is approximately 77 degrees east.
Option 1, Bengaluru, is located at approximately 77.6 degrees east, which is very close to Delhi`s longitude.
Option 2, Hyderabad is at approximately 78.5 degrees east, which is a bit further east compared to Delhi`s longitude.
Option 3, Nagpur is at roughly 79.1 degrees east, even farther away from Delhi`s longitude.
Option 4, Pune at approximately 73.9 degrees east, is notably further west in comparison to Delhi`s longitude.
Hence, among the given options, Bengaluru lies on a longitude closest to that of Delhi. So, the correct answer is Bengaluru.