Which is the purpose of the u. s treasury department? a. protect bank depositors against losing their money b. manage the growth of the u. s economy c. prevent stock market fraud d. issue government bonds

I believe the purpose is: B. . manage the growth of the u.s economy
In order to do this, United States Department of the Treasury has to fulfill various responsibilities such as Managing government's revenue, Supervising activities that initiated by banks and companies, Collecting taxes, Giving advice on monetary policies, etc.