How to manage a critical situation when it's irremediable? That's an important point while you're dealing with any task. In Simutrans, the bankruptcy is very common between new players, so let's share some ideas about how to avoid it when you have less than half a minute to find a solution...tic, tac, tic, tac...
Stop expansion, remove excess infrastructure if possible, send to depot vehicles that do not immediately earn money, possibly sell them.
Important thing to keep in mind is that while the account balance may well be negative, the goal is to make money - paying (again!) for removing things makes sense if it stops the fall.
Not that I was ever in such situation, as far as I can remember... If I had to pick something from your choices, it would be the breathing part.
Click the X on the new game screen. Then apply what VS said :)
I could not find my answer in the poll: use the -freeplay option ;)