Step 1: Understanding the Concept.
Indian Railways launched its own in-flight-style magazine, similar to those found on airlines, to be placed in premium train services.
Step 2: Check the options.
Rail Vishwa, Rail Mail, and Rail Patra are not the actual name used for this magazine, so options A, C, and D are wrong.
Step 3: Final Answer.
The magazine is called Rail Bandhu, distributed to passengers on trains like Rajdhani and Shatabdi Expresses, so option B is correct.