Sec. 5. (a) All powers and duties of the county that are legislative in nature shall be exercised or performed by its legislative body.
(b) The legislative body may:
(1) establish the committees that are necessary to carry out its functions;
(2) employ legal and administrative personnel necessary to carry out its functions;
(3) pass all ordinances, orders, resolutions, and motions for the government of the county, in the manner prescribed by IC 36-2-4;
(4) receive gifts, bequests, and grants from public or private sources;
(5) conduct investigations into the conduct of county business for the purpose of correcting deficiencies and insuring adherence to law and county policies and regulations; and
(6) establish, by ordinance, new county departments, divisions, or agencies whenever necessary to promote efficient county government.