Which is an islamist belief? a- western, non-islamic customs should be tolerated in islamic nations. b- social customs, with the exeption of religion, should be based on the ethnic background of the people. c- all aspects of society - political, legal, economic, social, and cultural - should be guided by strict muslim teaching. d- religion should be guided by strict muslim teaching. all other apsects of society - political, economic, and legal - should be secular in nature.