(c) The report shall include a description of the least restrictive residential placement necessary to achieve the purposes of treatment. In determining the least restrictive residential placement, consideration shall be given to public safety. If placement into or out of a developmental center is recommended, the regional center director or designee simultaneously shall submit the report to the executive director of the developmental center or his or her designee. The executive director of the developmental center or his or her designee may, within 15 days of receiving the regional center report, submit to the court a written report evaluating the ability of the developmental center to achieve the purposes of treatment for this person and whether the developmental center placement can adequately provide the security measures or systems required to protect the public health and safety from the potential dangers posed by the person’s known behaviors.