Entrenchment' means that provisions in the Charter of Rights and Freedoms: Question 15 options: must be approved by joint resolutions of the Canadian Council of Chief Executives and the Canadian Chamber of Commerce can be changed when opinion polls show a majority support for change can only be changed by following the formal Constitutional procedures must be adjusted to the standards of the international Human Rights Code must be defended vigorously as Canadians demonstrated in the trench warfare of World War One