vol.1 2pm translation question

I was wondering in this question (the one with the Swiss sub) what is the determining factor to which translation method to use. In the vignette there’s no mention that most of it’s activities are in SF, just says that the sub makes all the decision. But at the same time LC=RC. When things aren’t so clear, what should be overriding factor to choose which method to use? thanks.

subsidiary making all the decisions implies its self-contained, therefore current method. i did that question a few days ago…pretty sure that was the rationale.