I'd be a primary school teacher.
There is a runaway train barreling down the railway tracks. Ahead, on the tracks, there are five people tied up and unable to move. The train is headed straight for them. You are standing some distance off in the train yard, next to a lever. If you pull this lever, the train will switch to a different set of tracks. However, a family member of yours is tied up to those tracks.
Do you refuse to pull the lever, killing the five people tied up on the main track, saving your family member?
or
Do you pull the lever, killing your family member, but ultimately saving five other lives?