The children’s ombudsman has the authority to do all of the following:

  (a) Pursue all necessary action, including, but not limited to, legal action, to protect the rights and welfare of a child under the jurisdiction, control, or supervision of the department, the Michigan children’s institute, the family division of circuit court under section 2(a)(1) of chapter XIIA of the probate code of 1939, 1939 PA 288, MCL 712A.2, a child caring institution, or a child placing agency.

  (b) Pursue legislative advocacy in the best interests of children.

  (c) Review policies and procedures relating to the department’s involvement with children and make recommendations for improvement.

  (d) Subject to an appropriation of funds, commence and conduct investigations into alleged violations of the foster parent’s bill of rights law.