; (vi) that prohibits the use of seclusion or mechanical or chemical restraints and permits only short-term physical restraint if approved in the policies of the agency to prevent injury to self or others, and prohibits any prone physical restraint; (vii) that provides a system for a child to alert a staff member if the child has a concern, feels unfairly denied rights, or is subject to a threat of mistreatment; (viii) that has a continuous quality improvement methodology that regularly solicits information from children concerning their perceptions of the quality of care and opinions about the strengths and weaknesses of the program; (ix) that is in a single-family style residence with no more than 2 children per bedroom unless it is in the best interest of the children; and (x) in which the children are under the care of live-in parents that use the reasonable and prudent parent standard and provide 24-hour substitute care of children placed away from their parents or other caretakers. (B) Preservation of State flexibility The Secretary may not prohibit, limit, or penalize, by regulation or order, or bring an action in any court to challenge, any action or determination of a State or political subdivision of a State to— (i) treat a cottage family home as a foster family home for purposes of this part