When I did mine we had a voluntary revision and mock test day the day before the exam. The main scenario question set by the tutor was so spookily identical to the question in the exam the next day that I’m sure that either he must have had some insider knowledge of what it was going to be or the RSA have a finite number of questions which they run in a loop which can be predicted.
Agree with PA22 above, blitz the multi-choice questions you 100% know the answers to and work downwards from there. If you haven’t got a scooby then just guess, you’ve got a 1 in 4 chance of getting it right and possibly more because often one of the options is obviously nonsense.