It’s an odd list. But really I first encountered the trolley problem in 5th or 6th grade. And that was the morality version of it. My mom was very fond of the treats version (only pick one).
While I’m not sure about giving that list of people to choose from to jr high kids, morality quandaries are a good exercise for kids. These are the things where the rubber meets the road in life. Hard choices. Never to young to start getting practice.
I am sure you can give dozens of examples of times when you had to make such moral choices and the people you left behind died a horrible death.
Why don't you tell us about a few of them?
Unburden your soul as it were.