The correct answer is (b). Project Arrow is a government initiative to modernize the Indian postal system. It was launched in 2018 with the goal of making the postal system more efficient, reliable, and customer-friendly. The project has been implemented in phases, with the first phase focusing on improving the infrastructure of post offices and the second phase focusing on introducing new technology and services.
Option (a) is incorrect because Project Arrow is not concerned with the modernization of airports. The government has a separate initiative called the National Airports Authority of India (NAAI) for the modernization of airports.
Option (c) is incorrect because Project Arrow is not concerned with the modernization of road transport. The government has a separate initiative called the National Highways Authority of India (NHAI) for the modernization of roads.
Option (d) is incorrect because Project Arrow is not concerned with the modernization of railways. The government has a separate initiative called the Railway Board for the modernization of railways.