Honestly, I’m not learning the topic you’re learning, and I’m just in 10th grade and am taking anatomy and physiology this year
But personally speaking, I would treat the 8 year old with the possible tibia first, mostly because it’s a broken bone and could be causing extreme pain (and it’s an issue we already know). My second patient would be the 12 year old with the neck, arm, and lower back discomfort because there could be a serious underlying cause (my cause of concern would be if the problem is neural). My third patient would be the 46 year old with the superficial lacerations because although it’s just superficial, it’s worth giving a look at. And my 4th one would be the 11 year old with the headache, nausea, and vomiting because it could simply be a simple flu. Although once again, take my answer with a pinch of salt