This law states that the "chinese laborers to this country endanger the good order of certain localities" in the united states. which occupation would the word "laborers" most likely be referring to?

The occupation that it referring to is : skilled and unskilled miners

This treaty was enacted in 1880 , back then the job as a miners is pretty much the equivalent of today's engineer in the term of hotness and availability.

Hope this helps

Answer might be b i think