In the U. S. free enterprise system one of the primary roles of the government is to A employ a majority of the workforce
B guarantee that investors' profits are secure
с ensure the safety of products through regulation
D provide new sources of funding for technology start ups

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

either d or b, i'm not to sure. but my gut tells me it's prob going to be b