The purpose of this subtitle is to protect children who have been the subject of abuse or neglect by:
(1) mandating the reporting of any suspected abuse or neglect;
(2) giving immunity to any individual who reports, in good faith, a suspected incident of abuse or neglect;
(3) requiring prompt investigation of each reported suspected incident of abuse or neglect;
(4) causing immediate, cooperative efforts by the responsible agencies on behalf of children who have been the subject of reports of abuse or neglect; and
(5) requiring each local department to give the appropriate service in the best interest of the abused or neglected child.