Forensic anthropologists are trying to determine the age of a male skeleton that has been uncovered. They conclude that he must have been between 16 and 19 judging by the measurement of his ribs
clavicle
pelvic bone
tibia

I am pretty sure clavicle i think

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.