I had stupid 'hypothetical questions' fired at me too... maybe to 'test' your reactions to put your baby first? only thing i can think of as they weren't very reasonable or likely hypotheses (though in my case my h had hit me so at least there was a warning thing that i understood).
I just tried to answer as if they were reasonable hypotheses, and to show that i would genuinely be horrified and the appropriate action if these were likely/ did happen. i just kept repeating again and again that i was taking action to ensure h wasn't in a position to ever hit me again, and as i was taking this action, the scenarios were unlikely to happen.
They asked the whole gamut of questions to the sensible 'what are you going to do to stop h shouting in front of the baby, if he attempted to that is', to the slightly more horrifying 'what would you do if h tried to kill you whilst you were holding the baby (err, stop it happening somehow & safeguarding self & baby?) or missed you and hit the baby (as above, couldn't give the real answer cos worried they'd think i condoned violence, which i don't).
OR what if you woke up in the middle of the night to find him looming over you with a knife (err, well, equally with any knife wielding maniac... i'd, well, what would you do? where did the night attacking and weapons come from?)!!! and when i explained i couldn't change the locks yet, but did deadbolt the door when on my own, i was asked what would happen if my H came in in the dead of night (how i don't know, maybe break through the door as it would be dead bolted?) and went past me into the bedroom and hurt my ds
Mind boggles as to what the point was of asking the later questions, or what i was supposed to answer, especially as it was about him having hit me (when ds wasn't in the house)... not that he had 'form' for breaking down very sturdy thick doors and running around trying to hurt my son - he's a unpleasant man but the questioning felt like some cruel ethics test...
remember this was an initial assessment too - i felt so shaken up after and they asked everything and watched me cry and collapse WHILST my baby was there. no idea what they wanted out of that line of questioning... shock, horror and trying to take their questions seriously i guess. felt like she was actively trying to make me break down, though how that helped them decide whether DS was at risk i don't know