Some teachers don't want to admit they made a faulty test question. I thankfully have had wonderful teachers who know they wrote an off question - even a CLICKER question during the lecture - when half the class starts arguing it, lol. I tend to just take the question and work with it, whether faulty or not. If I get it wrong, I find out why and move on.
But yeah, that question is a bit... ridiculous. I would find out your classmates opinions and if they feel the same as you, move up the chain of command. There is someone higher then that teacher in that nursing faculty. In my school, we have the teachers, a lead for each year, then the whole faculty, all faculty of BOTH campuses, and then the director.... and then moves onto others in the CC faculty. But test questions never get THAT far, lol. It gets to test review and the teacher holding the review goes "I will talk to the content teacher and ask them" - like with Mental Health. We were taught one thing, and we answered one thing on the test, to find out we all failed that question because we were going off the lecture notes.... second year be crazy.
All in all - some teachers want to be right. Others see their mistakes and feel for the students. Depends on the individual and the school.
Best of luck