To identify the name of the in-house magazine that is published by Indian Railways for distribution to passengers on high-end trains, we evaluate the provided options. Among these options:
- Rail Vishwa: This option does not match the known publication by Indian Railways.
- Rail Bandhu: This is the correct answer and is indeed the name of the magazine published by the Indian Railways for passengers on high-end trains. It provides passengers with engaging content during their journey.
- Rail Mail: This is not the correct option and does not correspond to the magazine in question.
- Rail Patra: This does not match the name of the magazine distributed by Indian Railways.
Therefore, the correct answer is Rail Bandhu.