That should be the easiest portion of the interview because there is no right answer.

Remember to delegate as much as possible, then take all the info you get back an make a decision. You will sit in the "paper tiger" with an F.O. and a check airman in the jumpseat. Those guys will perform any task you ask of them such as communicate with ATC, dispatch, cabin crew etc. USE THEM. Take in all the info you get from them and add in your own insight and make a sound decision.

My scenario involved a sick passenger. The weather at the destination airport was sketchy as was the weather at most possible divert locations. I ended up with a divert to a SWA station where the weather was marginally better than my original destination and alternate although slightly farther away. There really was no right answer, they just wanted to see you take in the info and make a command decision. As a caveat, this was my scenario multiple years ago, but I really don't think it has changed much.