I get its a bus survey, but thats not the question prompt.It was a survey about BRT, so they weren't going to ask train questions. They just wanted to know what train people thought about the presented BRT scenarios, and whether that was different from what bike people thought, and what bus people thought, and etc. The only issue I had with it is that I couldn't accurately describe my transit usage. It's not as frequent as 2-3 times a week, but it is more frequent than 2-3 time a month.
The question says to answer from the point of view of your most used mode.