The correct answer is: C. 8
Indian Railways is divided into 8 regions:
- Northern Railway (NR)
- Eastern Railway (ER)
- Central Railway (CR)
- Western Railway (WR)
- South Central Railway (SCR)
- South Eastern Railway (SER)
- South Western Railway (SWR)
- North Eastern Railway (NER)
Each region is further divided into zones, divisions, and sections.
The Northern Railway is the largest of the 8 regions, with a total route length of 6,266 km. It is headquartered in New Delhi.
The Eastern Railway is the second largest region, with a total route length of 5,122 km. It is headquartered in Kolkata.
The Central Railway is the third largest region, with a total route length of 4,387 km. It is headquartered in Mumbai.
The Western Railway is the fourth largest region, with a total route length of 4,142 km. It is headquartered in Mumbai.
The South Central Railway is the fifth largest region, with a total route length of 3,604 km. It is headquartered in Secunderabad.
The South Eastern Railway is the sixth largest region, with a total route length of 3,282 km. It is headquartered in Kolkata.
The South Western Railway is the seventh largest region, with a total route length of 2,964 km. It is headquartered in Hubli.
The North Eastern Railway is the smallest region, with a total route length of 2,425 km. It is headquartered in Gorakhpur.