Correct option is D
The correct option to fill in the blank is (d) journey. Explanation of correct answer: The word "journey" refers to traveling, especially in a long trip. It is suitable here as it describes his travel time on the train. Meanings of other options:
· entourage: a group of people attending or surrounding an important person.
· tourism: the business or activity of travel for pleasure.
· itinerary: a planned route or journey, generally detailed.