They want them in order of HIGHEST self-employment to LOWEST. Technicians work in hospitals and can't be self employed, as well as dentists work in an office.
Now to get that answer you need two hands make sure they both have five fingers now put your hands toughter now then count the fingers and if you count them there should be 10 unless you ate one yesterday like I did.
Maybe the factor that they are all on their own and they don’t have to be pushed by their parents to do the work or the fact that they can choose to go to parties and do hw later
